Finding the Fourth Proportional to 6,339.20, 8,747.91 and 3,506.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,339.20 : 8,747.91 = 3,506.72 : x
2. Step 2: Convert to fraction form
   6,339.20/8,747.91 = 3,506.72/x
3. Step 3: Cross multiply
   6,339.20x = 8,747.91 × 3,506.72
4. Step 4: Simplify right side
   6,339.20x = 30,676,427.22
5. Step 5: Solve for x
   x = 30,676,427.22/6,339.20
6. Step 6: Final answer
   x = 4,839.17