Finding the Fourth Proportional to 3,968.69, 5,476.55 and 2,200.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968.69 : 5,476.55 = 2,200.19 : x
2. Step 2: Convert to fraction form
   3,968.69/5,476.55 = 2,200.19/x
3. Step 3: Cross multiply
   3,968.69x = 5,476.55 × 2,200.19
4. Step 4: Simplify right side
   3,968.69x = 12,049,412.16
5. Step 5: Solve for x
   x = 12,049,412.16/3,968.69
6. Step 6: Final answer
   x = 3,036.12