Finding the Fourth Proportional to 3,721.33, 5,549.16 and 3,688.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.33 : 5,549.16 = 3,688.03 : x
2. Step 2: Convert to fraction form
   3,721.33/5,549.16 = 3,688.03/x
3. Step 3: Cross multiply
   3,721.33x = 5,549.16 × 3,688.03
4. Step 4: Simplify right side
   3,721.33x = 20,465,422.37
5. Step 5: Solve for x
   x = 20,465,422.37/3,721.33
6. Step 6: Final answer
   x = 5,499.50