Finding the Fourth Proportional to 11,640.17, 16,082.25 and 8,119.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,640.17 : 16,082.25 = 8,119.10 : x
2. Step 2: Convert to fraction form
   11,640.17/16,082.25 = 8,119.10/x
3. Step 3: Cross multiply
   11,640.17x = 16,082.25 × 8,119.10
4. Step 4: Simplify right side
   11,640.17x = 130,573,405.73
5. Step 5: Solve for x
   x = 130,573,405.73/11,640.17
6. Step 6: Final answer
   x = 11,217.48