Finding the Fourth Proportional to 16,920.96, 23,342.88 and 10,957.92

Step by Step Solution

1. Step 1: Write the proportion equation
   16,920.96 : 23,342.88 = 10,957.92 : x
2. Step 2: Convert to fraction form
   16,920.96/23,342.88 = 10,957.92/x
3. Step 3: Cross multiply
   16,920.96x = 23,342.88 × 10,957.92
4. Step 4: Simplify right side
   16,920.96x = 255,789,411.61
5. Step 5: Solve for x
   x = 255,789,411.61/16,920.96
6. Step 6: Final answer
   x = 15,116.72