Finding the Fourth Proportional to 16,641.92, 22,965.72 and 9,931.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,641.92 : 22,965.72 = 9,931.88 : x
2. Step 2: Convert to fraction form
   16,641.92/22,965.72 = 9,931.88/x
3. Step 3: Cross multiply
   16,641.92x = 22,965.72 × 9,931.88
4. Step 4: Simplify right side
   16,641.92x = 228,092,775.15
5. Step 5: Solve for x
   x = 228,092,775.15/16,641.92
6. Step 6: Final answer
   x = 13,705.92