Finding the Fourth Proportional to 10,822.78, 16,235.85 and 3,426.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,822.78 : 16,235.85 = 3,426.53 : x
2. Step 2: Convert to fraction form
   10,822.78/16,235.85 = 3,426.53/x
3. Step 3: Cross multiply
   10,822.78x = 16,235.85 × 3,426.53
4. Step 4: Simplify right side
   10,822.78x = 55,632,627.10
5. Step 5: Solve for x
   x = 55,632,627.10/10,822.78
6. Step 6: Final answer
   x = 5,140.33