Finding the Fourth Proportional to 17,872.87, 24,665.37 and 9,915.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,872.87 : 24,665.37 = 9,915.10 : x
2. Step 2: Convert to fraction form
   17,872.87/24,665.37 = 9,915.10/x
3. Step 3: Cross multiply
   17,872.87x = 24,665.37 × 9,915.10
4. Step 4: Simplify right side
   17,872.87x = 244,559,437.18
5. Step 5: Solve for x
   x = 244,559,437.18/17,872.87
6. Step 6: Final answer
   x = 13,683.28