Finding the Fourth Proportional to 20,733.10, 31,099.62 and 5,150.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,733.10 : 31,099.62 = 5,150.72 : x
2. Step 2: Convert to fraction form
   20,733.10/31,099.62 = 5,150.72/x
3. Step 3: Cross multiply
   20,733.10x = 31,099.62 × 5,150.72
4. Step 4: Simplify right side
   20,733.10x = 160,185,434.73
5. Step 5: Solve for x
   x = 160,185,434.73/20,733.10
6. Step 6: Final answer
   x = 7,726.07