Finding the Fourth Proportional to 3,648.16, 5,034.18 and 2,155.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,648.16 : 5,034.18 = 2,155.96 : x
2. Step 2: Convert to fraction form
   3,648.16/5,034.18 = 2,155.96/x
3. Step 3: Cross multiply
   3,648.16x = 5,034.18 × 2,155.96
4. Step 4: Simplify right side
   3,648.16x = 10,853,490.71
5. Step 5: Solve for x
   x = 10,853,490.71/3,648.16
6. Step 6: Final answer
   x = 2,975.06