Finding the Fourth Proportional to 32,879.88, 49,332.78 and 12,105

Step by Step Solution

1. Step 1: Write the proportion equation
   32,879.88 : 49,332.78 = 12,105 : x
2. Step 2: Convert to fraction form
   32,879.88/49,332.78 = 12,105/x
3. Step 3: Cross multiply
   32,879.88x = 49,332.78 × 12,105
4. Step 4: Simplify right side
   32,879.88x = 597,173,301.90
5. Step 5: Solve for x
   x = 597,173,301.90/32,879.88
6. Step 6: Final answer
   x = 18,162.27