Finding the Fourth Proportional to 9,215.50, 12,717.43 and 5,236.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,215.50 : 12,717.43 = 5,236.82 : x
2. Step 2: Convert to fraction form
   9,215.50/12,717.43 = 5,236.82/x
3. Step 3: Cross multiply
   9,215.50x = 12,717.43 × 5,236.82
4. Step 4: Simplify right side
   9,215.50x = 66,598,910.47
5. Step 5: Solve for x
   x = 66,598,910.47/9,215.50
6. Step 6: Final answer
   x = 7,226.84