Finding the Fourth Proportional to 16,682.72, 23,020.32 and 9,512.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,682.72 : 23,020.32 = 9,512.86 : x
2. Step 2: Convert to fraction form
   16,682.72/23,020.32 = 9,512.86/x
3. Step 3: Cross multiply
   16,682.72x = 23,020.32 × 9,512.86
4. Step 4: Simplify right side
   16,682.72x = 218,989,081.32
5. Step 5: Solve for x
   x = 218,989,081.32/16,682.72
6. Step 6: Final answer
   x = 13,126.70