Finding the Fourth Proportional to 8,308.71, 12,458.25 and 2,760.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,308.71 : 12,458.25 = 2,760.57 : x
2. Step 2: Convert to fraction form
   8,308.71/12,458.25 = 2,760.57/x
3. Step 3: Cross multiply
   8,308.71x = 12,458.25 × 2,760.57
4. Step 4: Simplify right side
   8,308.71x = 34,391,871.20
5. Step 5: Solve for x
   x = 34,391,871.20/8,308.71
6. Step 6: Final answer
   x = 4,139.26