Finding the Fourth Proportional to 3,443.28, 4,756.68 and 2,667.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,443.28 : 4,756.68 = 2,667.28 : x
2. Step 2: Convert to fraction form
   3,443.28/4,756.68 = 2,667.28/x
3. Step 3: Cross multiply
   3,443.28x = 4,756.68 × 2,667.28
4. Step 4: Simplify right side
   3,443.28x = 12,687,397.43
5. Step 5: Solve for x
   x = 12,687,397.43/3,443.28
6. Step 6: Final answer
   x = 3,684.68