Finding the Fourth Proportional to 8,747.31, 13,121.16 and 2,824.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.31 : 13,121.16 = 2,824.71 : x
2. Step 2: Convert to fraction form
   8,747.31/13,121.16 = 2,824.71/x
3. Step 3: Cross multiply
   8,747.31x = 13,121.16 × 2,824.71
4. Step 4: Simplify right side
   8,747.31x = 37,063,471.86
5. Step 5: Solve for x
   x = 37,063,471.86/8,747.31
6. Step 6: Final answer
   x = 4,237.13