Finding the Fourth Proportional to 16,960.35, 23,406.72 and 9,409.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,960.35 : 23,406.72 = 9,409.12 : x
2. Step 2: Convert to fraction form
   16,960.35/23,406.72 = 9,409.12/x
3. Step 3: Cross multiply
   16,960.35x = 23,406.72 × 9,409.12
4. Step 4: Simplify right side
   16,960.35x = 220,236,637.29
5. Step 5: Solve for x
   x = 220,236,637.29/16,960.35
6. Step 6: Final answer
   x = 12,985.38