Finding the Fourth Proportional to 16,620.72, 22,925.17 and 9,901.17

Step by Step Solution

1. Step 1: Write the proportion equation
   16,620.72 : 22,925.17 = 9,901.17 : x
2. Step 2: Convert to fraction form
   16,620.72/22,925.17 = 9,901.17/x
3. Step 3: Cross multiply
   16,620.72x = 22,925.17 × 9,901.17
4. Step 4: Simplify right side
   16,620.72x = 226,986,005.45
5. Step 5: Solve for x
   x = 226,986,005.45/16,620.72
6. Step 6: Final answer
   x = 13,656.81