Finding the Fourth Proportional to 12,800.76, 17,662.41 and 8,082.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,800.76 : 17,662.41 = 8,082.42 : x
2. Step 2: Convert to fraction form
   12,800.76/17,662.41 = 8,082.42/x
3. Step 3: Cross multiply
   12,800.76x = 17,662.41 × 8,082.42
4. Step 4: Simplify right side
   12,800.76x = 142,755,015.83
5. Step 5: Solve for x
   x = 142,755,015.83/12,800.76
6. Step 6: Final answer
   x = 11,152.07