Finding the Fourth Proportional to 3,552.72, 4,902.72 and 2,155.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,552.72 : 4,902.72 = 2,155.52 : x
2. Step 2: Convert to fraction form
   3,552.72/4,902.72 = 2,155.52/x
3. Step 3: Cross multiply
   3,552.72x = 4,902.72 × 2,155.52
4. Step 4: Simplify right side
   3,552.72x = 10,567,911.01
5. Step 5: Solve for x
   x = 10,567,911.01/3,552.72
6. Step 6: Final answer
   x = 2,974.60