Finding the Fourth Proportional to 3,687.72, 5,089.71 and 2,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,687.72 : 5,089.71 = 2,196.50 : x
2. Step 2: Convert to fraction form
   3,687.72/5,089.71 = 2,196.50/x
3. Step 3: Cross multiply
   3,687.72x = 5,089.71 × 2,196.50
4. Step 4: Simplify right side
   3,687.72x = 11,179,548.02
5. Step 5: Solve for x
   x = 11,179,548.02/3,687.72
6. Step 6: Final answer
   x = 3,031.56