Finding the Fourth Proportional to 9,258.56, 12,776.72 and 5,279.68

Step by Step Solution

1. Step 1: Write the proportion equation
   9,258.56 : 12,776.72 = 5,279.68 : x
2. Step 2: Convert to fraction form
   9,258.56/12,776.72 = 5,279.68/x
3. Step 3: Cross multiply
   9,258.56x = 12,776.72 × 5,279.68
4. Step 4: Simplify right side
   9,258.56x = 67,456,993.05
5. Step 5: Solve for x
   x = 67,456,993.05/9,258.56
6. Step 6: Final answer
   x = 7,285.91