Finding the Fourth Proportional to 3,279.72, 4,915.42 and 3,245

Step by Step Solution

1. Step 1: Write the proportion equation
   3,279.72 : 4,915.42 = 3,245 : x
2. Step 2: Convert to fraction form
   3,279.72/4,915.42 = 3,245/x
3. Step 3: Cross multiply
   3,279.72x = 4,915.42 × 3,245
4. Step 4: Simplify right side
   3,279.72x = 15,950,537.90
5. Step 5: Solve for x
   x = 15,950,537.90/3,279.72
6. Step 6: Final answer
   x = 4,863.38