Finding the Fourth Proportional to 3,721.02, 5,168.67 and 3,661.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,721.02 : 5,168.67 = 3,661.49 : x
2. Step 2: Convert to fraction form
   3,721.02/5,168.67 = 3,661.49/x
3. Step 3: Cross multiply
   3,721.02x = 5,168.67 × 3,661.49
4. Step 4: Simplify right side
   3,721.02x = 18,925,007.67
5. Step 5: Solve for x
   x = 18,925,007.67/3,721.02
6. Step 6: Final answer
   x = 5,085.97