Finding the Fourth Proportional to 25,109.60, 34,651.24 and 13,931.60

Step by Step Solution

1. Step 1: Write the proportion equation
   25,109.60 : 34,651.24 = 13,931.60 : x
2. Step 2: Convert to fraction form
   25,109.60/34,651.24 = 13,931.60/x
3. Step 3: Cross multiply
   25,109.60x = 34,651.24 × 13,931.60
4. Step 4: Simplify right side
   25,109.60x = 482,747,215.18
5. Step 5: Solve for x
   x = 482,747,215.18/25,109.60
6. Step 6: Final answer
   x = 19,225.60