Finding the Fourth Proportional to 3,255.90, 4,874.12 and 2,216.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,255.90 : 4,874.12 = 2,216.94 : x
2. Step 2: Convert to fraction form
   3,255.90/4,874.12 = 2,216.94/x
3. Step 3: Cross multiply
   3,255.90x = 4,874.12 × 2,216.94
4. Step 4: Simplify right side
   3,255.90x = 10,805,631.59
5. Step 5: Solve for x
   x = 10,805,631.59/3,255.90
6. Step 6: Final answer
   x = 3,318.78