Finding the Fourth Proportional to 25,240.28, 34,831.42 and 13,909.86

Step by Step Solution

1. Step 1: Write the proportion equation
   25,240.28 : 34,831.42 = 13,909.86 : x
2. Step 2: Convert to fraction form
   25,240.28/34,831.42 = 13,909.86/x
3. Step 3: Cross multiply
   25,240.28x = 34,831.42 × 13,909.86
4. Step 4: Simplify right side
   25,240.28x = 484,500,141.03
5. Step 5: Solve for x
   x = 484,500,141.03/25,240.28
6. Step 6: Final answer
   x = 19,195.52