Finding the Fourth Proportional to 25,320, 34,941.60 and 14,142

Step by Step Solution

1. Step 1: Write the proportion equation
   25,320 : 34,941.60 = 14,142 : x
2. Step 2: Convert to fraction form
   25,320/34,941.60 = 14,142/x
3. Step 3: Cross multiply
   25,320x = 34,941.60 × 14,142
4. Step 4: Simplify right side
   25,320x = 494,144,107.20
5. Step 5: Solve for x
   x = 494,144,107.20/25,320
6. Step 6: Final answer
   x = 19,515.96