Finding the Fourth Proportional to 7,180.72, 9,908.73 and 4,155.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,180.72 : 9,908.73 = 4,155.37 : x
2. Step 2: Convert to fraction form
   7,180.72/9,908.73 = 4,155.37/x
3. Step 3: Cross multiply
   7,180.72x = 9,908.73 × 4,155.37
4. Step 4: Simplify right side
   7,180.72x = 41,174,439.38
5. Step 5: Solve for x
   x = 41,174,439.38/7,180.72
6. Step 6: Final answer
   x = 5,734.03