Finding the Fourth Proportional to 16,956.96, 23,401.80 and 9,404.01

Step by Step Solution

1. Step 1: Write the proportion equation
   16,956.96 : 23,401.80 = 9,404.01 : x
2. Step 2: Convert to fraction form
   16,956.96/23,401.80 = 9,404.01/x
3. Step 3: Cross multiply
   16,956.96x = 23,401.80 × 9,404.01
4. Step 4: Simplify right side
   16,956.96x = 220,070,843.23
5. Step 5: Solve for x
   x = 220,070,843.23/16,956.96
6. Step 6: Final answer
   x = 12,978.20