Finding the Fourth Proportional to 15,756.72, 21,743.46 and 8,682.98

Step by Step Solution

1. Step 1: Write the proportion equation
   15,756.72 : 21,743.46 = 8,682.98 : x
2. Step 2: Convert to fraction form
   15,756.72/21,743.46 = 8,682.98/x
3. Step 3: Cross multiply
   15,756.72x = 21,743.46 × 8,682.98
4. Step 4: Simplify right side
   15,756.72x = 188,798,028.31
5. Step 5: Solve for x
   x = 188,798,028.31/15,756.72
6. Step 6: Final answer
   x = 11,982.06