Finding the Fourth Proportional to 3,689.16, 5,090.09 and 2,196.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689.16 : 5,090.09 = 2,196.42 : x
2. Step 2: Convert to fraction form
   3,689.16/5,090.09 = 2,196.42/x
3. Step 3: Cross multiply
   3,689.16x = 5,090.09 × 2,196.42
4. Step 4: Simplify right side
   3,689.16x = 11,179,964.50
5. Step 5: Solve for x
   x = 11,179,964.50/3,689.16
6. Step 6: Final answer
   x = 3,030.49