Finding the Fourth Proportional to 8,128.71, 12,193.02 and 2,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.71 : 12,193.02 = 2,862.50 : x
2. Step 2: Convert to fraction form
   8,128.71/12,193.02 = 2,862.50/x
3. Step 3: Cross multiply
   8,128.71x = 12,193.02 × 2,862.50
4. Step 4: Simplify right side
   8,128.71x = 34,902,458.78
5. Step 5: Solve for x
   x = 34,902,458.78/8,128.71
6. Step 6: Final answer
   x = 4,293.73