Skysong sells a snowboard, EZslide, that is popular with snowboard enthusiasts. The following is information relating to Skysong's beginning inventory and purchases of EZslide snowboards during September. During the same month, 102 EZslide snowboards were sold. Skysong uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 11 $90 $990 Sept. 12 Purchases 46 93 4,278 Sept. 19 Sept. 26 Purchases 48 94 4,512 Purchases 19 95 1,805 Totals 124 $11,585 Compute the ending inventory at September 30 and the cost of goods sold using the FIFO, LIFO, and average-cost methods. (Round per unit cost to 3 decimal places, e.g. 15.647 and final answers to O decimal places, e.g. 5,125.) The ending inventory at $ September 30 Cost of goods sold FIFO $ $ LIFO $ $ Average-cost