Finding the Fourth Proportional to 8,321.68, 12,485.76 and 3,942.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,321.68 : 12,485.76 = 3,942.82 : x
2. Step 2: Convert to fraction form
   8,321.68/12,485.76 = 3,942.82/x
3. Step 3: Cross multiply
   8,321.68x = 12,485.76 × 3,942.82
4. Step 4: Simplify right side
   8,321.68x = 49,229,104.24
5. Step 5: Solve for x
   x = 49,229,104.24/8,321.68
6. Step 6: Final answer
   x = 5,915.77