Finding the Fourth Proportional to 9,419.14, 12,998.49 and 5,227.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,419.14 : 12,998.49 = 5,227.46 : x
2. Step 2: Convert to fraction form
   9,419.14/12,998.49 = 5,227.46/x
3. Step 3: Cross multiply
   9,419.14x = 12,998.49 × 5,227.46
4. Step 4: Simplify right side
   9,419.14x = 67,949,086.54
5. Step 5: Solve for x
   x = 67,949,086.54/9,419.14
6. Step 6: Final answer
   x = 7,213.94