Mather sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Mather's purchases of EZslide snowboards during September. During the same month, 102 EZslide snowboards were sold. Mather uses a periodic inventory system. Image Instructions Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 12 $100 $1,200 Sept. 12 Purchases 45 103 4,635 Sept. 19 Purchases 50 104 5,200 Sept. 26 Purchases 20 105 2,100 Totals 127 $13,135 Compute the ending inventory at September 30 and the cost of goods sold using the FIFO, LIFO, and average-cost methods. (For average-cost, round the average unit cost to three decimal places.) FIFO - 12 x 100 = 1,200 FIFO - 5 x 104 = 520 45 x 103 = 4,635 20 x 105 = 2,100 45 x 104 = 4,680 25 = 2,620 102 Prove the amount allocated to cost of goods sold under each method. Calculate inventory and cost of goods sold using FIFO, average-cost, and LIFO in a periodic inventory system