Finding the Fourth Proportional to 3,968.80, 5,476.69 and 2,200.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968.80 : 5,476.69 = 2,200.29 : x
2. Step 2: Convert to fraction form
   3,968.80/5,476.69 = 2,200.29/x
3. Step 3: Cross multiply
   3,968.80x = 5,476.69 × 2,200.29
4. Step 4: Simplify right side
   3,968.80x = 12,050,297.67
5. Step 5: Solve for x
   x = 12,050,297.67/3,968.80
6. Step 6: Final answer
   x = 3,036.26