Finding the Fourth Proportional to 3,421.31, 5,113.20 and 2,498.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,421.31 : 5,113.20 = 2,498.81 : x
2. Step 2: Convert to fraction form
   3,421.31/5,113.20 = 2,498.81/x
3. Step 3: Cross multiply
   3,421.31x = 5,113.20 × 2,498.81
4. Step 4: Simplify right side
   3,421.31x = 12,776,915.29
5. Step 5: Solve for x
   x = 12,776,915.29/3,421.31
6. Step 6: Final answer
   x = 3,734.51