Finding the Fourth Proportional to 12,124.79, 18,187.49 and 3,359.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,124.79 : 18,187.49 = 3,359.78 : x
2. Step 2: Convert to fraction form
   12,124.79/18,187.49 = 3,359.78/x
3. Step 3: Cross multiply
   12,124.79x = 18,187.49 × 3,359.78
4. Step 4: Simplify right side
   12,124.79x = 61,105,965.15
5. Step 5: Solve for x
   x = 61,105,965.15/12,124.79
6. Step 6: Final answer
   x = 5,039.75