Finding the Fourth Proportional to 8,645.72, 12,965.34 and 4,265.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,645.72 : 12,965.34 = 4,265.24 : x
2. Step 2: Convert to fraction form
   8,645.72/12,965.34 = 4,265.24/x
3. Step 3: Cross multiply
   8,645.72x = 12,965.34 × 4,265.24
4. Step 4: Simplify right side
   8,645.72x = 55,300,286.78
5. Step 5: Solve for x
   x = 55,300,286.78/8,645.72
6. Step 6: Final answer
   x = 6,396.26