Finding the Fourth Proportional to 5,629.55, 7,769.33 and 3,112.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,629.55 : 7,769.33 = 3,112.25 : x
2. Step 2: Convert to fraction form
   5,629.55/7,769.33 = 3,112.25/x
3. Step 3: Cross multiply
   5,629.55x = 7,769.33 × 3,112.25
4. Step 4: Simplify right side
   5,629.55x = 24,180,042.88
5. Step 5: Solve for x
   x = 24,180,042.88/5,629.55
6. Step 6: Final answer
   x = 4,295.20