Finding the Fourth Proportional to 16,697.52, 23,042.86 and 9,143.73

Step by Step Solution

1. Step 1: Write the proportion equation
   16,697.52 : 23,042.86 = 9,143.73 : x
2. Step 2: Convert to fraction form
   16,697.52/23,042.86 = 9,143.73/x
3. Step 3: Cross multiply
   16,697.52x = 23,042.86 × 9,143.73
4. Step 4: Simplify right side
   16,697.52x = 210,697,690.27
5. Step 5: Solve for x
   x = 210,697,690.27/16,697.52
6. Step 6: Final answer
   x = 12,618.50