Finding the Fourth Proportional to 5,498.64, 7,586.24 and 3,139.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,498.64 : 7,586.24 = 3,139.12 : x
2. Step 2: Convert to fraction form
   5,498.64/7,586.24 = 3,139.12/x
3. Step 3: Cross multiply
   5,498.64x = 7,586.24 × 3,139.12
4. Step 4: Simplify right side
   5,498.64x = 23,814,117.71
5. Step 5: Solve for x
   x = 23,814,117.71/5,498.64
6. Step 6: Final answer
   x = 4,330.91