Finding the Fourth Proportional to 5,142.73, 7,707.91 and 2,365.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,142.73 : 7,707.91 = 2,365.57 : x
2. Step 2: Convert to fraction form
   5,142.73/7,707.91 = 2,365.57/x
3. Step 3: Cross multiply
   5,142.73x = 7,707.91 × 2,365.57
4. Step 4: Simplify right side
   5,142.73x = 18,233,588.83
5. Step 5: Solve for x
   x = 18,233,588.83/5,142.73
6. Step 6: Final answer
   x = 3,545.51