Finding the Fourth Proportional to 8,260.79, 12,393.61 and 3,327.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,260.79 : 12,393.61 = 3,327.89 : x
2. Step 2: Convert to fraction form
   8,260.79/12,393.61 = 3,327.89/x
3. Step 3: Cross multiply
   8,260.79x = 12,393.61 × 3,327.89
4. Step 4: Simplify right side
   8,260.79x = 41,244,565.69
5. Step 5: Solve for x
   x = 41,244,565.69/8,260.79
6. Step 6: Final answer
   x = 4,992.81