Finding the Fourth Proportional to 5,629.50, 7,768.71 and 3,145.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,629.50 : 7,768.71 = 3,145.50 : x
2. Step 2: Convert to fraction form
   5,629.50/7,768.71 = 3,145.50/x
3. Step 3: Cross multiply
   5,629.50x = 7,768.71 × 3,145.50
4. Step 4: Simplify right side
   5,629.50x = 24,436,477.31
5. Step 5: Solve for x
   x = 24,436,477.31/5,629.50
6. Step 6: Final answer
   x = 4,340.79