Finding the Fourth Proportional to 8,290.83, 12,440.57 and 3,672.75

Step by Step Solution

1. Step 1: Write the proportion equation
   8,290.83 : 12,440.57 = 3,672.75 : x
2. Step 2: Convert to fraction form
   8,290.83/12,440.57 = 3,672.75/x
3. Step 3: Cross multiply
   8,290.83x = 12,440.57 × 3,672.75
4. Step 4: Simplify right side
   8,290.83x = 45,691,085.10
5. Step 5: Solve for x
   x = 45,691,085.10/8,290.83
6. Step 6: Final answer
   x = 5,511.04