Finding the Fourth Proportional to 3,722.72, 5,132.22 and 3,607.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,722.72 : 5,132.22 = 3,607.70 : x
2. Step 2: Convert to fraction form
   3,722.72/5,132.22 = 3,607.70/x
3. Step 3: Cross multiply
   3,722.72x = 5,132.22 × 3,607.70
4. Step 4: Simplify right side
   3,722.72x = 18,515,510.09
5. Step 5: Solve for x
   x = 18,515,510.09/3,722.72
6. Step 6: Final answer
   x = 4,973.65