Finding the Fourth Proportional to 11,242.38, 16,855.24 and 5,393.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,242.38 : 16,855.24 = 5,393.42 : x
2. Step 2: Convert to fraction form
   11,242.38/16,855.24 = 5,393.42/x
3. Step 3: Cross multiply
   11,242.38x = 16,855.24 × 5,393.42
4. Step 4: Simplify right side
   11,242.38x = 90,907,388.52
5. Step 5: Solve for x
   x = 90,907,388.52/11,242.38
6. Step 6: Final answer
   x = 8,086.13