NEW YORK, Jan 12 (Reuters) - Wall Street continued its rally on Friday with record closing highs as fourth-quarter earnings season kicked off with solid results from banks and robust retail sales drove investor optimism about economic growth. The Dow Jones Industrial Average .DJI rose 228.46 points, or 0.89 percent, to 25,803.19, the S&P 500 .SPX gained 18.67 points, or 0.67 percent, to 2,786.23 and the Nasdaq Composite .IXIC added 49.29 points, or 0.68 percent, to 7,261.06. (Reporting by Sinead Carew; Editing by Nick Zieminski) ((April.Joyner@thomsonreuters.com; +1 646 223 7480;)) Keywords: USA STOCKS/