Finding the Fourth Proportional to 16,879.76, 25,322.72 and 5,787.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,879.76 : 25,322.72 = 5,787.57 : x
2. Step 2: Convert to fraction form
   16,879.76/25,322.72 = 5,787.57/x
3. Step 3: Cross multiply
   16,879.76x = 25,322.72 × 5,787.57
4. Step 4: Simplify right side
   16,879.76x = 146,557,007.36
5. Step 5: Solve for x
   x = 146,557,007.36/16,879.76
6. Step 6: Final answer
   x = 8,682.41