Finding the Fourth Proportional to 11,007.72, 16,510.97 and 8,049.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,007.72 : 16,510.97 = 8,049.20 : x
2. Step 2: Convert to fraction form
   11,007.72/16,510.97 = 8,049.20/x
3. Step 3: Cross multiply
   11,007.72x = 16,510.97 × 8,049.20
4. Step 4: Simplify right side
   11,007.72x = 132,900,099.72
5. Step 5: Solve for x
   x = 132,900,099.72/11,007.72
6. Step 6: Final answer
   x = 12,073.35