Finding the Fourth Proportional to 16,768.72, 25,148.58 and 7,986.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,768.72 : 25,148.58 = 7,986.16 : x
2. Step 2: Convert to fraction form
   16,768.72/25,148.58 = 7,986.16/x
3. Step 3: Cross multiply
   16,768.72x = 25,148.58 × 7,986.16
4. Step 4: Simplify right side
   16,768.72x = 200,840,583.65
5. Step 5: Solve for x
   x = 200,840,583.65/16,768.72
6. Step 6: Final answer
   x = 11,977.10