Finding the Fourth Proportional to 3,720.38, 5,572.02 and 2,156.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,720.38 : 5,572.02 = 2,156.52 : x
2. Step 2: Convert to fraction form
   3,720.38/5,572.02 = 2,156.52/x
3. Step 3: Cross multiply
   3,720.38x = 5,572.02 × 2,156.52
4. Step 4: Simplify right side
   3,720.38x = 12,016,172.57
5. Step 5: Solve for x
   x = 12,016,172.57/3,720.38
6. Step 6: Final answer
   x = 3,229.83