Finding the Fourth Proportional to 9,057.38, 12,496.82 and 5,228.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.38 : 12,496.82 = 5,228.08 : x
2. Step 2: Convert to fraction form
   9,057.38/12,496.82 = 5,228.08/x
3. Step 3: Cross multiply
   9,057.38x = 12,496.82 × 5,228.08
4. Step 4: Simplify right side
   9,057.38x = 65,334,330.39
5. Step 5: Solve for x
   x = 65,334,330.39/9,057.38
6. Step 6: Final answer
   x = 7,213.38