Finding the Fourth Proportional to 16,969.29, 23,418.91 and 9,417.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,969.29 : 23,418.91 = 9,417.05 : x
2. Step 2: Convert to fraction form
   16,969.29/23,418.91 = 9,417.05/x
3. Step 3: Cross multiply
   16,969.29x = 23,418.91 × 9,417.05
4. Step 4: Simplify right side
   16,969.29x = 220,537,081.42
5. Step 5: Solve for x
   x = 220,537,081.42/16,969.29
6. Step 6: Final answer
   x = 12,996.25