Finding the Fourth Proportional to 6,339.77, 8,748.81 and 3,507.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,339.77 : 8,748.81 = 3,507.15 : x
2. Step 2: Convert to fraction form
   6,339.77/8,748.81 = 3,507.15/x
3. Step 3: Cross multiply
   6,339.77x = 8,748.81 × 3,507.15
4. Step 4: Simplify right side
   6,339.77x = 30,683,372.59
5. Step 5: Solve for x
   x = 30,683,372.59/6,339.77
6. Step 6: Final answer
   x = 4,839.83