Finding the Fourth Proportional to 8,156.24, 12,238.20 and 8,025.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,156.24 : 12,238.20 = 8,025.20 : x
2. Step 2: Convert to fraction form
   8,156.24/12,238.20 = 8,025.20/x
3. Step 3: Cross multiply
   8,156.24x = 12,238.20 × 8,025.20
4. Step 4: Simplify right side
   8,156.24x = 98,214,002.64
5. Step 5: Solve for x
   x = 98,214,002.64/8,156.24
6. Step 6: Final answer
   x = 12,041.58