Finding the Fourth Proportional to 8,374.32, 12,542.04 and 8,082.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,374.32 : 12,542.04 = 8,082.72 : x
2. Step 2: Convert to fraction form
   8,374.32/12,542.04 = 8,082.72/x
3. Step 3: Cross multiply
   8,374.32x = 12,542.04 × 8,082.72
4. Step 4: Simplify right side
   8,374.32x = 101,373,797.55
5. Step 5: Solve for x
   x = 101,373,797.55/8,374.32
6. Step 6: Final answer
   x = 12,105.32