Finding the Fourth Proportional to 8,269.65, 12,406.49 and 4,111.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,269.65 : 12,406.49 = 4,111.61 : x
2. Step 2: Convert to fraction form
   8,269.65/12,406.49 = 4,111.61/x
3. Step 3: Cross multiply
   8,269.65x = 12,406.49 × 4,111.61
4. Step 4: Simplify right side
   8,269.65x = 51,010,565.76
5. Step 5: Solve for x
   x = 51,010,565.76/8,269.65
6. Step 6: Final answer
   x = 6,168.41