Finding the Fourth Proportional to 5,287.69, 7,928.83 and 2,822.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,287.69 : 7,928.83 = 2,822.05 : x
2. Step 2: Convert to fraction form
   5,287.69/7,928.83 = 2,822.05/x
3. Step 3: Cross multiply
   5,287.69x = 7,928.83 × 2,822.05
4. Step 4: Simplify right side
   5,287.69x = 22,375,554.70
5. Step 5: Solve for x
   x = 22,375,554.70/5,287.69
6. Step 6: Final answer
   x = 4,231.63