Finding the Fourth Proportional to 8,574.28, 12,857.83 and 3,025.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,574.28 : 12,857.83 = 3,025.12 : x
2. Step 2: Convert to fraction form
   8,574.28/12,857.83 = 3,025.12/x
3. Step 3: Cross multiply
   8,574.28x = 12,857.83 × 3,025.12
4. Step 4: Simplify right side
   8,574.28x = 38,896,478.69
5. Step 5: Solve for x
   x = 38,896,478.69/8,574.28
6. Step 6: Final answer
   x = 4,536.41