Finding the Fourth Proportional to 16,864, 23,272.41 and 9,412

Step by Step Solution

1. Step 1: Write the proportion equation
   16,864 : 23,272.41 = 9,412 : x
2. Step 2: Convert to fraction form
   16,864/23,272.41 = 9,412/x
3. Step 3: Cross multiply
   16,864x = 23,272.41 × 9,412
4. Step 4: Simplify right side
   16,864x = 219,039,922.92
5. Step 5: Solve for x
   x = 219,039,922.92/16,864
6. Step 6: Final answer
   x = 12,988.61