Finding the Fourth Proportional to 16,958.96, 23,404.56 and 9,406.02

Step by Step Solution

1. Step 1: Write the proportion equation
   16,958.96 : 23,404.56 = 9,406.02 : x
2. Step 2: Convert to fraction form
   16,958.96/23,404.56 = 9,406.02/x
3. Step 3: Cross multiply
   16,958.96x = 23,404.56 × 9,406.02
4. Step 4: Simplify right side
   16,958.96x = 220,143,759.45
5. Step 5: Solve for x
   x = 220,143,759.45/16,958.96
6. Step 6: Final answer
   x = 12,980.97