Finding the Fourth Proportional to 16,955.02, 23,399.31 and 9,403.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,955.02 : 23,399.31 = 9,403.72 : x
2. Step 2: Convert to fraction form
   16,955.02/23,399.31 = 9,403.72/x
3. Step 3: Cross multiply
   16,955.02x = 23,399.31 × 9,403.72
4. Step 4: Simplify right side
   16,955.02x = 220,040,559.43
5. Step 5: Solve for x
   x = 220,040,559.43/16,955.02
6. Step 6: Final answer
   x = 12,977.90