Finding the Fourth Proportional to 18,429.50, 25,432.79 and 10,472.15

Step by Step Solution

1. Step 1: Write the proportion equation
   18,429.50 : 25,432.79 = 10,472.15 : x
2. Step 2: Convert to fraction form
   18,429.50/25,432.79 = 10,472.15/x
3. Step 3: Cross multiply
   18,429.50x = 25,432.79 × 10,472.15
4. Step 4: Simplify right side
   18,429.50x = 266,335,812.27
5. Step 5: Solve for x
   x = 266,335,812.27/18,429.50
6. Step 6: Final answer
   x = 14,451.61