Finding the Fourth Proportional to 8,766.72, 13,143.60 and 4,082.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,766.72 : 13,143.60 = 4,082.76 : x
2. Step 2: Convert to fraction form
   8,766.72/13,143.60 = 4,082.76/x
3. Step 3: Cross multiply
   8,766.72x = 13,143.60 × 4,082.76
4. Step 4: Simplify right side
   8,766.72x = 53,662,164.34
5. Step 5: Solve for x
   x = 53,662,164.34/8,766.72
6. Step 6: Final answer
   x = 6,121.12