Finding the Fourth Proportional to 8,321.82, 12,481.71 and 2,478.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,321.82 : 12,481.71 = 2,478.88 : x
2. Step 2: Convert to fraction form
   8,321.82/12,481.71 = 2,478.88/x
3. Step 3: Cross multiply
   8,321.82x = 12,481.71 × 2,478.88
4. Step 4: Simplify right side
   8,321.82x = 30,940,661.28
5. Step 5: Solve for x
   x = 30,940,661.28/8,321.82
6. Step 6: Final answer
   x = 3,718.02