Finding the Fourth Proportional to 9,418.75, 12,998.28 and 5,227

Step by Step Solution

1. Step 1: Write the proportion equation
   9,418.75 : 12,998.28 = 5,227 : x
2. Step 2: Convert to fraction form
   9,418.75/12,998.28 = 5,227/x
3. Step 3: Cross multiply
   9,418.75x = 12,998.28 × 5,227
4. Step 4: Simplify right side
   9,418.75x = 67,942,009.56
5. Step 5: Solve for x
   x = 67,942,009.56/9,418.75
6. Step 6: Final answer
   x = 7,213.48