Finding the Fourth Proportional to 16,872.94, 25,308.42 and 5,186.08

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872.94 : 25,308.42 = 5,186.08 : x
2. Step 2: Convert to fraction form
   16,872.94/25,308.42 = 5,186.08/x
3. Step 3: Cross multiply
   16,872.94x = 25,308.42 × 5,186.08
4. Step 4: Simplify right side
   16,872.94x = 131,251,490.79
5. Step 5: Solve for x
   x = 131,251,490.79/16,872.94
6. Step 6: Final answer
   x = 7,778.82