Finding the Fourth Proportional to 17,666.18, 24,379.78 and 9,708.62

Step by Step Solution

1. Step 1: Write the proportion equation
   17,666.18 : 24,379.78 = 9,708.62 : x
2. Step 2: Convert to fraction form
   17,666.18/24,379.78 = 9,708.62/x
3. Step 3: Cross multiply
   17,666.18x = 24,379.78 × 9,708.62
4. Step 4: Simplify right side
   17,666.18x = 236,694,019.70
5. Step 5: Solve for x
   x = 236,694,019.70/17,666.18
6. Step 6: Final answer
   x = 13,398.14