Finding the Fourth Proportional to 11,424.38, 17,138.72 and 5,268.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,424.38 : 17,138.72 = 5,268.38 : x
2. Step 2: Convert to fraction form
   11,424.38/17,138.72 = 5,268.38/x
3. Step 3: Cross multiply
   11,424.38x = 17,138.72 × 5,268.38
4. Step 4: Simplify right side
   11,424.38x = 90,293,217.15
5. Step 5: Solve for x
   x = 90,293,217.15/11,424.38
6. Step 6: Final answer
   x = 7,903.56