Finding the Fourth Proportional to 25,061.60, 34,584.87 and 13,731.05

Step by Step Solution

1. Step 1: Write the proportion equation
   25,061.60 : 34,584.87 = 13,731.05 : x
2. Step 2: Convert to fraction form
   25,061.60/34,584.87 = 13,731.05/x
3. Step 3: Cross multiply
   25,061.60x = 34,584.87 × 13,731.05
4. Step 4: Simplify right side
   25,061.60x = 474,886,717.17
5. Step 5: Solve for x
   x = 474,886,717.17/25,061.60
6. Step 6: Final answer
   x = 18,948.78