Finding the Fourth Proportional to 8,406.18, 12,607.25 and 3,723.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,406.18 : 12,607.25 = 3,723.60 : x
2. Step 2: Convert to fraction form
   8,406.18/12,607.25 = 3,723.60/x
3. Step 3: Cross multiply
   8,406.18x = 12,607.25 × 3,723.60
4. Step 4: Simplify right side
   8,406.18x = 46,944,337.48
5. Step 5: Solve for x
   x = 46,944,337.48/8,406.18
6. Step 6: Final answer
   x = 5,584.50