iPhone maker Apple has reported revenue of $28.27b for the fourth quarter ended 24 September 2011, an increase of 34% compared with $20.34b in the same quarter previous fiscal.

The company posted quarterly net profit of $6.62b, or $7.05 per diluted share, up 53.6% compared with $4.31b, or $4.64 per diluted share in the same quarter previous fiscal.

Gross margin was 40.3% compared to 36.9% in the year-ago quarter, while international sales accounted for 63% of the quarter’s revenue, the company said.

Apple sold 17.07 million iPhones in the quarter, representing 21% unit growth over the year-ago quarter, while sale of iPads grew by 166% to 11.12 million during the quarter.

The company also sold 4.89 million Macs during the quarter, a 26% unit increase over the year-ago quarter, while 6.62 million iPods are sold, representing a 27% unit decline from the year-ago quarter.

Apple CEO Tim Cook said they are thrilled with the very strong finish of an outstanding fiscal 2011, growing annual revenue to $108b and growing earnings to $26b.

"Customer response to iPhone 4S has been fantastic, we have strong momentum going into the holiday season, and we remain really enthusiastic about our product pipeline," Cook said.

Apple CFO Peter Oppenheimer said they are extremely pleased with their record September quarter revenue and earnings and with cash generation of $5.4bn during the quarter.

"Looking ahead to the first fiscal quarter of 2012, which will span 14 weeks rather than 13, we expect revenue of about $37b and diluted earnings per share of about $9.30," Oppenheimer said.