Finding the Fourth Proportional to 11,238.38, 16,849.25 and 5,389.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,238.38 : 16,849.25 = 5,389.42 : x
2. Step 2: Convert to fraction form
   11,238.38/16,849.25 = 5,389.42/x
3. Step 3: Cross multiply
   11,238.38x = 16,849.25 × 5,389.42
4. Step 4: Simplify right side
   11,238.38x = 90,807,684.94
5. Step 5: Solve for x
   x = 90,807,684.94/11,238.38
6. Step 6: Final answer
   x = 8,080.14