Finding the Fourth Proportional to 17,685.43, 24,404.99 and 9,726.12

Step by Step Solution

1. Step 1: Write the proportion equation
   17,685.43 : 24,404.99 = 9,726.12 : x
2. Step 2: Convert to fraction form
   17,685.43/24,404.99 = 9,726.12/x
3. Step 3: Cross multiply
   17,685.43x = 24,404.99 × 9,726.12
4. Step 4: Simplify right side
   17,685.43x = 237,365,812.71
5. Step 5: Solve for x
   x = 237,365,812.71/17,685.43
6. Step 6: Final answer
   x = 13,421.55