Finding the Fourth Proportional to 25,120.18, 34,665.74 and 13,789.38

Step by Step Solution

1. Step 1: Write the proportion equation
   25,120.18 : 34,665.74 = 13,789.38 : x
2. Step 2: Convert to fraction form
   25,120.18/34,665.74 = 13,789.38/x
3. Step 3: Cross multiply
   25,120.18x = 34,665.74 × 13,789.38
4. Step 4: Simplify right side
   25,120.18x = 478,018,819.57
5. Step 5: Solve for x
   x = 478,018,819.57/25,120.18
6. Step 6: Final answer
   x = 19,029.28