Finding the Fourth Proportional to 3,968.51, 5,476.56 and 2,200.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968.51 : 5,476.56 = 2,200.15 : x
2. Step 2: Convert to fraction form
   3,968.51/5,476.56 = 2,200.15/x
3. Step 3: Cross multiply
   3,968.51x = 5,476.56 × 2,200.15
4. Step 4: Simplify right side
   3,968.51x = 12,049,226.10
5. Step 5: Solve for x
   x = 12,049,226.10/3,968.51
6. Step 6: Final answer
   x = 3,036.21