Finding the Fourth Proportional to 7,086.78, 10,626.63 and 2,642.94

Step by Step Solution

1. Step 1: Write the proportion equation
   7,086.78 : 10,626.63 = 2,642.94 : x
2. Step 2: Convert to fraction form
   7,086.78/10,626.63 = 2,642.94/x
3. Step 3: Cross multiply
   7,086.78x = 10,626.63 × 2,642.94
4. Step 4: Simplify right side
   7,086.78x = 28,085,545.49
5. Step 5: Solve for x
   x = 28,085,545.49/7,086.78
6. Step 6: Final answer
   x = 3,963.09