Finding the Fourth Proportional to 12,267.78, 18,404.57 and 3,948.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,267.78 : 18,404.57 = 3,948.27 : x
2. Step 2: Convert to fraction form
   12,267.78/18,404.57 = 3,948.27/x
3. Step 3: Cross multiply
   12,267.78x = 18,404.57 × 3,948.27
4. Step 4: Simplify right side
   12,267.78x = 72,666,211.59
5. Step 5: Solve for x
   x = 72,666,211.59/12,267.78
6. Step 6: Final answer
   x = 5,923.34