Google shares were down nearly 10 percent in after-hours trading on Thursday after the Internet search giant\'s earnings fell short of the expectations of Wall Street analysts. Google reported a fourth-quarter net profit of $2.71 billion, compared to $2.54 billion in the same quarter a year ago. Quarterly revenue rose 25 percent to $10.58 billion. Earnings per share, however, of $9.50 were below the forecasts of $10.49 and Google shares were down 9.69 percent at $577.60 in after-hours trading. \"Google had a really strong quarter ending a great year,\" chief executive Larry Page said in a statement. \"Full year revenue was up 29 percent, and our quarterly revenue blew past the $10 billion mark for the first time \"I am super excited about the growth of Android, Gmail, and Google+, which now has 90 million users globally -- well over double what I announced just three months ago,\" Page said.