Finding the Fourth Proportional to 12,181.38, 18,273.42 and 3,861.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,181.38 : 18,273.42 = 3,861.78 : x
2. Step 2: Convert to fraction form
   12,181.38/18,273.42 = 3,861.78/x
3. Step 3: Cross multiply
   12,181.38x = 18,273.42 × 3,861.78
4. Step 4: Simplify right side
   12,181.38x = 70,567,927.89
5. Step 5: Solve for x
   x = 70,567,927.89/12,181.38
6. Step 6: Final answer
   x = 5,793.10