Finding the Fourth Proportional to 7,105.42, 10,658.55 and 2,945.73

Step by Step Solution

1. Step 1: Write the proportion equation
   7,105.42 : 10,658.55 = 2,945.73 : x
2. Step 2: Convert to fraction form
   7,105.42/10,658.55 = 2,945.73/x
3. Step 3: Cross multiply
   7,105.42x = 10,658.55 × 2,945.73
4. Step 4: Simplify right side
   7,105.42x = 31,397,261.51
5. Step 5: Solve for x
   x = 31,397,261.51/7,105.42
6. Step 6: Final answer
   x = 4,418.78