Finding the Fourth Proportional to 17,680.76, 24,399.41 and 10,129.53

Step by Step Solution

1. Step 1: Write the proportion equation
   17,680.76 : 24,399.41 = 10,129.53 : x
2. Step 2: Convert to fraction form
   17,680.76/24,399.41 = 10,129.53/x
3. Step 3: Cross multiply
   17,680.76x = 24,399.41 × 10,129.53
4. Step 4: Simplify right side
   17,680.76x = 247,154,555.58
5. Step 5: Solve for x
   x = 247,154,555.58/17,680.76
6. Step 6: Final answer
   x = 13,978.73