Finding the Fourth Proportional to 6,158.68, 8,495.94 and 3,639.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,158.68 : 8,495.94 = 3,639.57 : x
2. Step 2: Convert to fraction form
   6,158.68/8,495.94 = 3,639.57/x
3. Step 3: Cross multiply
   6,158.68x = 8,495.94 × 3,639.57
4. Step 4: Simplify right side
   6,158.68x = 30,921,601.35
5. Step 5: Solve for x
   x = 30,921,601.35/6,158.68
6. Step 6: Final answer
   x = 5,020.81