Finding the Fourth Proportional to 8,082.72, 12,130.56 and 4,188.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,082.72 : 12,130.56 = 4,188.24 : x
2. Step 2: Convert to fraction form
   8,082.72/12,130.56 = 4,188.24/x
3. Step 3: Cross multiply
   8,082.72x = 12,130.56 × 4,188.24
4. Step 4: Simplify right side
   8,082.72x = 50,805,696.61
5. Step 5: Solve for x
   x = 50,805,696.61/8,082.72
6. Step 6: Final answer
   x = 6,285.72