Finding the Fourth Proportional to 8,789.71, 12,129.48 and 5,250.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789.71 : 12,129.48 = 5,250.82 : x
2. Step 2: Convert to fraction form
   8,789.71/12,129.48 = 5,250.82/x
3. Step 3: Cross multiply
   8,789.71x = 12,129.48 × 5,250.82
4. Step 4: Simplify right side
   8,789.71x = 63,689,716.17
5. Step 5: Solve for x
   x = 63,689,716.17/8,789.71
6. Step 6: Final answer
   x = 7,245.94