Finding the Fourth Proportional to 12,149.89, 18,227.27 and 4,359.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,149.89 : 18,227.27 = 4,359.31 : x
2. Step 2: Convert to fraction form
   12,149.89/18,227.27 = 4,359.31/x
3. Step 3: Cross multiply
   12,149.89x = 18,227.27 × 4,359.31
4. Step 4: Simplify right side
   12,149.89x = 79,458,320.38
5. Step 5: Solve for x
   x = 79,458,320.38/12,149.89
6. Step 6: Final answer
   x = 6,539.84