Finding the Fourth Proportional to 16,856.56, 25,287.78 and 5,764.36

Step by Step Solution

1. Step 1: Write the proportion equation
   16,856.56 : 25,287.78 = 5,764.36 : x
2. Step 2: Convert to fraction form
   16,856.56/25,287.78 = 5,764.36/x
3. Step 3: Cross multiply
   16,856.56x = 25,287.78 × 5,764.36
4. Step 4: Simplify right side
   16,856.56x = 145,767,867.52
5. Step 5: Solve for x
   x = 145,767,867.52/16,856.56
6. Step 6: Final answer
   x = 8,647.55