Finding the Fourth Proportional to 3,686.43, 5,086.38 and 2,092.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.43 : 5,086.38 = 2,092.72 : x
2. Step 2: Convert to fraction form
   3,686.43/5,086.38 = 2,092.72/x
3. Step 3: Cross multiply
   3,686.43x = 5,086.38 × 2,092.72
4. Step 4: Simplify right side
   3,686.43x = 10,644,369.15
5. Step 5: Solve for x
   x = 10,644,369.15/3,686.43
6. Step 6: Final answer
   x = 2,887.45