Finding the Fourth Proportional to 6,415.89, 9,617.15 and 3,124.46

Step by Step Solution

1. Step 1: Write the proportion equation
   6,415.89 : 9,617.15 = 3,124.46 : x
2. Step 2: Convert to fraction form
   6,415.89/9,617.15 = 3,124.46/x
3. Step 3: Cross multiply
   6,415.89x = 9,617.15 × 3,124.46
4. Step 4: Simplify right side
   6,415.89x = 30,048,336.78
5. Step 5: Solve for x
   x = 30,048,336.78/6,415.89
6. Step 6: Final answer
   x = 4,683.42