Finding the Fourth Proportional to 8,123.55, 12,185.93 and 2,280.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.55 : 12,185.93 = 2,280.61 : x
2. Step 2: Convert to fraction form
   8,123.55/12,185.93 = 2,280.61/x
3. Step 3: Cross multiply
   8,123.55x = 12,185.93 × 2,280.61
4. Step 4: Simplify right side
   8,123.55x = 27,791,353.82
5. Step 5: Solve for x
   x = 27,791,353.82/8,123.55
6. Step 6: Final answer
   x = 3,421.08