Finding the Fourth Proportional to 16,856.48, 25,287.72 and 5,764.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,856.48 : 25,287.72 = 5,764.40 : x
2. Step 2: Convert to fraction form
   16,856.48/25,287.72 = 5,764.40/x
3. Step 3: Cross multiply
   16,856.48x = 25,287.72 × 5,764.40
4. Step 4: Simplify right side
   16,856.48x = 145,768,533.17
5. Step 5: Solve for x
   x = 145,768,533.17/16,856.48
6. Step 6: Final answer
   x = 8,647.63