Finding the Fourth Proportional to 6,124.57, 8,451.89 and 3,640.57

Step by Step Solution

1. Step 1: Write the proportion equation
   6,124.57 : 8,451.89 = 3,640.57 : x
2. Step 2: Convert to fraction form
   6,124.57/8,451.89 = 3,640.57/x
3. Step 3: Cross multiply
   6,124.57x = 8,451.89 × 3,640.57
4. Step 4: Simplify right side
   6,124.57x = 30,769,697.18
5. Step 5: Solve for x
   x = 30,769,697.18/6,124.57
6. Step 6: Final answer
   x = 5,023.98