Finding the Fourth Proportional to 12,474.72, 17,211.69 and 7,169.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,474.72 : 17,211.69 = 7,169.22 : x
2. Step 2: Convert to fraction form
   12,474.72/17,211.69 = 7,169.22/x
3. Step 3: Cross multiply
   12,474.72x = 17,211.69 × 7,169.22
4. Step 4: Simplify right side
   12,474.72x = 123,394,392.18
5. Step 5: Solve for x
   x = 123,394,392.18/12,474.72
6. Step 6: Final answer
   x = 9,891.56