Finding the Fourth Proportional to 3,172.28, 4,765.72 and 2,250.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,172.28 : 4,765.72 = 2,250.12 : x
2. Step 2: Convert to fraction form
   3,172.28/4,765.72 = 2,250.12/x
3. Step 3: Cross multiply
   3,172.28x = 4,765.72 × 2,250.12
4. Step 4: Simplify right side
   3,172.28x = 10,723,441.89
5. Step 5: Solve for x
   x = 10,723,441.89/3,172.28
6. Step 6: Final answer
   x = 3,380.36