Finding the Fourth Proportional to 3,915.70, 5,403.76 and 2,498.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,915.70 : 5,403.76 = 2,498.13 : x
2. Step 2: Convert to fraction form
   3,915.70/5,403.76 = 2,498.13/x
3. Step 3: Cross multiply
   3,915.70x = 5,403.76 × 2,498.13
4. Step 4: Simplify right side
   3,915.70x = 13,499,288.72
5. Step 5: Solve for x
   x = 13,499,288.72/3,915.70
6. Step 6: Final answer
   x = 3,447.48