Finding the Fourth Proportional to 17,666.58, 24,379.68 and 9,708.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,666.58 : 24,379.68 = 9,708.72 : x
2. Step 2: Convert to fraction form
   17,666.58/24,379.68 = 9,708.72/x
3. Step 3: Cross multiply
   17,666.58x = 24,379.68 × 9,708.72
4. Step 4: Simplify right side
   17,666.58x = 236,695,486.81
5. Step 5: Solve for x
   x = 236,695,486.81/17,666.58
6. Step 6: Final answer
   x = 13,397.92