Finding the Fourth Proportional to 8,287.52, 12,428.61 and 2,739.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,287.52 : 12,428.61 = 2,739.83 : x
2. Step 2: Convert to fraction form
   8,287.52/12,428.61 = 2,739.83/x
3. Step 3: Cross multiply
   8,287.52x = 12,428.61 × 2,739.83
4. Step 4: Simplify right side
   8,287.52x = 34,052,216.39
5. Step 5: Solve for x
   x = 34,052,216.39/8,287.52
6. Step 6: Final answer
   x = 4,108.86