Finding the Fourth Proportional to 9,256.26, 12,775.50 and 6,429.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,256.26 : 12,775.50 = 6,429.54 : x
2. Step 2: Convert to fraction form
   9,256.26/12,775.50 = 6,429.54/x
3. Step 3: Cross multiply
   9,256.26x = 12,775.50 × 6,429.54
4. Step 4: Simplify right side
   9,256.26x = 82,140,588.27
5. Step 5: Solve for x
   x = 82,140,588.27/9,256.26
6. Step 6: Final answer
   x = 8,874.06