Finding the Fourth Proportional to 25,139.97, 34,693.38 and 13,809.69

Step by Step Solution

1. Step 1: Write the proportion equation
   25,139.97 : 34,693.38 = 13,809.69 : x
2. Step 2: Convert to fraction form
   25,139.97/34,693.38 = 13,809.69/x
3. Step 3: Cross multiply
   25,139.97x = 34,693.38 × 13,809.69
4. Step 4: Simplify right side
   25,139.97x = 479,104,822.85
5. Step 5: Solve for x
   x = 479,104,822.85/25,139.97
6. Step 6: Final answer
   x = 19,057.49