Finding the Fourth Proportional to 3,212.80, 4,441.14 and 3,081.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,212.80 : 4,441.14 = 3,081.98 : x
2. Step 2: Convert to fraction form
   3,212.80/4,441.14 = 3,081.98/x
3. Step 3: Cross multiply
   3,212.80x = 4,441.14 × 3,081.98
4. Step 4: Simplify right side
   3,212.80x = 13,687,515.76
5. Step 5: Solve for x
   x = 13,687,515.76/3,212.80
6. Step 6: Final answer
   x = 4,260.31