Finding the Fourth Proportional to 16,822.78, 25,216.35 and 5,719.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,822.78 : 25,216.35 = 5,719.30 : x
2. Step 2: Convert to fraction form
   16,822.78/25,216.35 = 5,719.30/x
3. Step 3: Cross multiply
   16,822.78x = 25,216.35 × 5,719.30
4. Step 4: Simplify right side
   16,822.78x = 144,219,870.56
5. Step 5: Solve for x
   x = 144,219,870.56/16,822.78
6. Step 6: Final answer
   x = 8,572.89