Finding the Fourth Proportional to 9,236.67, 12,746.72 and 5,257.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,236.67 : 12,746.72 = 5,257.87 : x
2. Step 2: Convert to fraction form
   9,236.67/12,746.72 = 5,257.87/x
3. Step 3: Cross multiply
   9,236.67x = 12,746.72 × 5,257.87
4. Step 4: Simplify right side
   9,236.67x = 67,020,596.69
5. Step 5: Solve for x
   x = 67,020,596.69/9,236.67
6. Step 6: Final answer
   x = 7,255.93