Finding the Fourth Proportional to 9,251.72, 12,766.50 and 5,272.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,251.72 : 12,766.50 = 5,272.74 : x
2. Step 2: Convert to fraction form
   9,251.72/12,766.50 = 5,272.74/x
3. Step 3: Cross multiply
   9,251.72x = 12,766.50 × 5,272.74
4. Step 4: Simplify right side
   9,251.72x = 67,314,435.21
5. Step 5: Solve for x
   x = 67,314,435.21/9,251.72
6. Step 6: Final answer
   x = 7,275.88