Finding the Fourth Proportional to 17,665.78, 24,379.32 and 9,708.25

Step by Step Solution

1. Step 1: Write the proportion equation
   17,665.78 : 24,379.32 = 9,708.25 : x
2. Step 2: Convert to fraction form
   17,665.78/24,379.32 = 9,708.25/x
3. Step 3: Cross multiply
   17,665.78x = 24,379.32 × 9,708.25
4. Step 4: Simplify right side
   17,665.78x = 236,680,533.39
5. Step 5: Solve for x
   x = 236,680,533.39/17,665.78
6. Step 6: Final answer
   x = 13,397.68