Finding the Fourth Proportional to 6,830.89, 10,247.91 and 2,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,830.89 : 10,247.91 = 2,150.78 : x
2. Step 2: Convert to fraction form
   6,830.89/10,247.91 = 2,150.78/x
3. Step 3: Cross multiply
   6,830.89x = 10,247.91 × 2,150.78
4. Step 4: Simplify right side
   6,830.89x = 22,040,940.56
5. Step 5: Solve for x
   x = 22,040,940.56/6,830.89
6. Step 6: Final answer
   x = 3,226.66