Finding the Fourth Proportional to 12,266.78, 18,403.07 and 3,947.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,266.78 : 18,403.07 = 3,947.27 : x
2. Step 2: Convert to fraction form
   12,266.78/18,403.07 = 3,947.27/x
3. Step 3: Cross multiply
   12,266.78x = 18,403.07 × 3,947.27
4. Step 4: Simplify right side
   12,266.78x = 72,641,774.37
5. Step 5: Solve for x
   x = 72,641,774.37/12,266.78
6. Step 6: Final answer
   x = 5,921.83