Finding the Fourth Proportional to 16,220.43, 22,384.17 and 9,146.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,220.43 : 22,384.17 = 9,146.88 : x
2. Step 2: Convert to fraction form
   16,220.43/22,384.17 = 9,146.88/x
3. Step 3: Cross multiply
   16,220.43x = 22,384.17 × 9,146.88
4. Step 4: Simplify right side
   16,220.43x = 204,745,316.89
5. Step 5: Solve for x
   x = 204,745,316.89/16,220.43
6. Step 6: Final answer
   x = 12,622.68