Finding the Fourth Proportional to 16,965.96, 23,412.81 and 9,412.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,965.96 : 23,412.81 = 9,412.10 : x
2. Step 2: Convert to fraction form
   16,965.96/23,412.81 = 9,412.10/x
3. Step 3: Cross multiply
   16,965.96x = 23,412.81 × 9,412.10
4. Step 4: Simplify right side
   16,965.96x = 220,363,715.03
5. Step 5: Solve for x
   x = 220,363,715.03/16,965.96
6. Step 6: Final answer
   x = 12,988.58