Finding the Fourth Proportional to 16,921.32, 23,351.46 and 9,368.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,921.32 : 23,351.46 = 9,368.18 : x
2. Step 2: Convert to fraction form
   16,921.32/23,351.46 = 9,368.18/x
3. Step 3: Cross multiply
   16,921.32x = 23,351.46 × 9,368.18
4. Step 4: Simplify right side
   16,921.32x = 218,760,680.54
5. Step 5: Solve for x
   x = 218,760,680.54/16,921.32
6. Step 6: Final answer
   x = 12,928.11