Finding the Fourth Proportional to 3,968.72, 5,476.78 and 2,200.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968.72 : 5,476.78 = 2,200.32 : x
2. Step 2: Convert to fraction form
   3,968.72/5,476.78 = 2,200.32/x
3. Step 3: Cross multiply
   3,968.72x = 5,476.78 × 2,200.32
4. Step 4: Simplify right side
   3,968.72x = 12,050,668.57
5. Step 5: Solve for x
   x = 12,050,668.57/3,968.72
6. Step 6: Final answer
   x = 3,036.41