Finding the Fourth Proportional to 3,613.37, 4,986.78 and 2,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.37 : 4,986.78 = 2,196.72 : x
2. Step 2: Convert to fraction form
   3,613.37/4,986.78 = 2,196.72/x
3. Step 3: Cross multiply
   3,613.37x = 4,986.78 × 2,196.72
4. Step 4: Simplify right side
   3,613.37x = 10,954,559.36
5. Step 5: Solve for x
   x = 10,954,559.36/3,613.37
6. Step 6: Final answer
   x = 3,031.68