Finding the Fourth Proportional to 16,661.43, 23,000.18 and 12,682.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,661.43 : 23,000.18 = 12,682.71 : x
2. Step 2: Convert to fraction form
   16,661.43/23,000.18 = 12,682.71/x
3. Step 3: Cross multiply
   16,661.43x = 23,000.18 × 12,682.71
4. Step 4: Simplify right side
   16,661.43x = 291,704,612.89
5. Step 5: Solve for x
   x = 291,704,612.89/16,661.43
6. Step 6: Final answer
   x = 17,507.78