Finding the Fourth Proportional to 8,057.72, 12,082.18 and 5,425.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,057.72 : 12,082.18 = 5,425.12 : x
2. Step 2: Convert to fraction form
   8,057.72/12,082.18 = 5,425.12/x
3. Step 3: Cross multiply
   8,057.72x = 12,082.18 × 5,425.12
4. Step 4: Simplify right side
   8,057.72x = 65,547,276.36
5. Step 5: Solve for x
   x = 65,547,276.36/8,057.72
6. Step 6: Final answer
   x = 8,134.72