Finding the Fourth Proportional to 3,139.46, 4,709.97 and 2,216.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,139.46 : 4,709.97 = 2,216.83 : x
2. Step 2: Convert to fraction form
   3,139.46/4,709.97 = 2,216.83/x
3. Step 3: Cross multiply
   3,139.46x = 4,709.97 × 2,216.83
4. Step 4: Simplify right side
   3,139.46x = 10,441,191.02
5. Step 5: Solve for x
   x = 10,441,191.02/3,139.46
6. Step 6: Final answer
   x = 3,325.79