Finding the Fourth Proportional to 12,469.84, 17,192.82 and 7,986.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,469.84 : 17,192.82 = 7,986.22 : x
2. Step 2: Convert to fraction form
   12,469.84/17,192.82 = 7,986.22/x
3. Step 3: Cross multiply
   12,469.84x = 17,192.82 × 7,986.22
4. Step 4: Simplify right side
   12,469.84x = 137,305,642.94
5. Step 5: Solve for x
   x = 137,305,642.94/12,469.84
6. Step 6: Final answer
   x = 11,011.02