Finding the Fourth Proportional to 25,139.10, 37,702.43 and 8,498.78

Step by Step Solution

1. Step 1: Write the proportion equation
   25,139.10 : 37,702.43 = 8,498.78 : x
2. Step 2: Convert to fraction form
   25,139.10/37,702.43 = 8,498.78/x
3. Step 3: Cross multiply
   25,139.10x = 37,702.43 × 8,498.78
4. Step 4: Simplify right side
   25,139.10x = 320,424,427.03
5. Step 5: Solve for x
   x = 320,424,427.03/25,139.10
6. Step 6: Final answer
   x = 12,746.06