Finding the Fourth Proportional to 5,223.87, 7,836.24 and 1,328.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,223.87 : 7,836.24 = 1,328.25 : x
2. Step 2: Convert to fraction form
   5,223.87/7,836.24 = 1,328.25/x
3. Step 3: Cross multiply
   5,223.87x = 7,836.24 × 1,328.25
4. Step 4: Simplify right side
   5,223.87x = 10,408,485.78
5. Step 5: Solve for x
   x = 10,408,485.78/5,223.87
6. Step 6: Final answer
   x = 1,992.49