Finding the Fourth Proportional to 16,872.96, 25,308.81 and 5,185.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872.96 : 25,308.81 = 5,185.88 : x
2. Step 2: Convert to fraction form
   16,872.96/25,308.81 = 5,185.88/x
3. Step 3: Cross multiply
   16,872.96x = 25,308.81 × 5,185.88
4. Step 4: Simplify right side
   16,872.96x = 131,248,325.06
5. Step 5: Solve for x
   x = 131,248,325.06/16,872.96
6. Step 6: Final answer
   x = 7,778.62