Finding the Fourth Proportional to 17,682.61, 24,402.18 and 9,724.89

Step by Step Solution

1. Step 1: Write the proportion equation
   17,682.61 : 24,402.18 = 9,724.89 : x
2. Step 2: Convert to fraction form
   17,682.61/24,402.18 = 9,724.89/x
3. Step 3: Cross multiply
   17,682.61x = 24,402.18 × 9,724.89
4. Step 4: Simplify right side
   17,682.61x = 237,308,516.26
5. Step 5: Solve for x
   x = 237,308,516.26/17,682.61
6. Step 6: Final answer
   x = 13,420.45