Finding the Fourth Proportional to 16,872.24, 25,308.42 and 5,185.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872.24 : 25,308.42 = 5,185.38 : x
2. Step 2: Convert to fraction form
   16,872.24/25,308.42 = 5,185.38/x
3. Step 3: Cross multiply
   16,872.24x = 25,308.42 × 5,185.38
4. Step 4: Simplify right side
   16,872.24x = 131,233,774.90
5. Step 5: Solve for x
   x = 131,233,774.90/16,872.24
6. Step 6: Final answer
   x = 7,778.09