Finding the Fourth Proportional to 8,323.30, 12,484.71 and 3,391.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,323.30 : 12,484.71 = 3,391.72 : x
2. Step 2: Convert to fraction form
   8,323.30/12,484.71 = 3,391.72/x
3. Step 3: Cross multiply
   8,323.30x = 12,484.71 × 3,391.72
4. Step 4: Simplify right side
   8,323.30x = 42,344,640.60
5. Step 5: Solve for x
   x = 42,344,640.60/8,323.30
6. Step 6: Final answer
   x = 5,087.48