Finding the Fourth Proportional to 20,871.16, 31,296.72 and 9,768.52

Step by Step Solution

1. Step 1: Write the proportion equation
   20,871.16 : 31,296.72 = 9,768.52 : x
2. Step 2: Convert to fraction form
   20,871.16/31,296.72 = 9,768.52/x
3. Step 3: Cross multiply
   20,871.16x = 31,296.72 × 9,768.52
4. Step 4: Simplify right side
   20,871.16x = 305,722,635.25
5. Step 5: Solve for x
   x = 305,722,635.25/20,871.16
6. Step 6: Final answer
   x = 14,648.09