Finding the Fourth Proportional to 12,231.63, 16,879.89 and 7,451.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,231.63 : 16,879.89 = 7,451.77 : x
2. Step 2: Convert to fraction form
   12,231.63/16,879.89 = 7,451.77/x
3. Step 3: Cross multiply
   12,231.63x = 16,879.89 × 7,451.77
4. Step 4: Simplify right side
   12,231.63x = 125,785,057.91
5. Step 5: Solve for x
   x = 125,785,057.91/12,231.63
6. Step 6: Final answer
   x = 10,283.59