Finding the Fourth Proportional to 3,968.70, 5,476.72 and 2,200.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968.70 : 5,476.72 = 2,200.28 : x
2. Step 2: Convert to fraction form
   3,968.70/5,476.72 = 2,200.28/x
3. Step 3: Cross multiply
   3,968.70x = 5,476.72 × 2,200.28
4. Step 4: Simplify right side
   3,968.70x = 12,050,317.48
5. Step 5: Solve for x
   x = 12,050,317.48/3,968.70
6. Step 6: Final answer
   x = 3,036.34