Finding the Fourth Proportional to 16,872.80, 25,308.48 and 5,784.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,872.80 : 25,308.48 = 5,784.80 : x
2. Step 2: Convert to fraction form
   16,872.80/25,308.48 = 5,784.80/x
3. Step 3: Cross multiply
   16,872.80x = 25,308.48 × 5,784.80
4. Step 4: Simplify right side
   16,872.80x = 146,404,495.10
5. Step 5: Solve for x
   x = 146,404,495.10/16,872.80
6. Step 6: Final answer
   x = 8,676.95