Finding the Fourth Proportional to 16,810.88, 25,216.34 and 5,718.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,810.88 : 25,216.34 = 5,718.76 : x
2. Step 2: Convert to fraction form
   16,810.88/25,216.34 = 5,718.76/x
3. Step 3: Cross multiply
   16,810.88x = 25,216.34 × 5,718.76
4. Step 4: Simplify right side
   16,810.88x = 144,206,196.54
5. Step 5: Solve for x
   x = 144,206,196.54/16,810.88
6. Step 6: Final answer
   x = 8,578.15