Finding the Fourth Proportional to 16,805.76, 25,211.52 and 5,116.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,805.76 : 25,211.52 = 5,116.80 : x
2. Step 2: Convert to fraction form
   16,805.76/25,211.52 = 5,116.80/x
3. Step 3: Cross multiply
   16,805.76x = 25,211.52 × 5,116.80
4. Step 4: Simplify right side
   16,805.76x = 129,002,305.54
5. Step 5: Solve for x
   x = 129,002,305.54/16,805.76
6. Step 6: Final answer
   x = 7,676.08