Finding the Fourth Proportional to 12,508.91, 17,268.57 and 9,669.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,508.91 : 17,268.57 = 9,669.89 : x
2. Step 2: Convert to fraction form
   12,508.91/17,268.57 = 9,669.89/x
3. Step 3: Cross multiply
   12,508.91x = 17,268.57 × 9,669.89
4. Step 4: Simplify right side
   12,508.91x = 166,985,086.01
5. Step 5: Solve for x
   x = 166,985,086.01/12,508.91
6. Step 6: Final answer
   x = 13,349.30