Finding the Fourth Proportional to 12,209, 16,839.72 and 7,952.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,209 : 16,839.72 = 7,952.24 : x
2. Step 2: Convert to fraction form
   12,209/16,839.72 = 7,952.24/x
3. Step 3: Cross multiply
   12,209x = 16,839.72 × 7,952.24
4. Step 4: Simplify right side
   12,209x = 133,913,494.97
5. Step 5: Solve for x
   x = 133,913,494.97/12,209
6. Step 6: Final answer
   x = 10,968.42