Finding the Fourth Proportional to 8,123.91, 12,186.69 and 2,280.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.91 : 12,186.69 = 2,280.54 : x
2. Step 2: Convert to fraction form
   8,123.91/12,186.69 = 2,280.54/x
3. Step 3: Cross multiply
   8,123.91x = 12,186.69 × 2,280.54
4. Step 4: Simplify right side
   8,123.91x = 27,792,234.01
5. Step 5: Solve for x
   x = 27,792,234.01/8,123.91
6. Step 6: Final answer
   x = 3,421.04