Finding the Fourth Proportional to 25,144.18, 37,711.27 and 12,480.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,144.18 : 37,711.27 = 12,480.72 : x
2. Step 2: Convert to fraction form
   25,144.18/37,711.27 = 12,480.72/x
3. Step 3: Cross multiply
   25,144.18x = 37,711.27 × 12,480.72
4. Step 4: Simplify right side
   25,144.18x = 470,663,801.71
5. Step 5: Solve for x
   x = 470,663,801.71/25,144.18
6. Step 6: Final answer
   x = 18,718.60