Finding the Fourth Proportional to 12,223.98, 18,344.71 and 5,208.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,223.98 : 18,344.71 = 5,208.91 : x
2. Step 2: Convert to fraction form
   12,223.98/18,344.71 = 5,208.91/x
3. Step 3: Cross multiply
   12,223.98x = 18,344.71 × 5,208.91
4. Step 4: Simplify right side
   12,223.98x = 95,555,943.37
5. Step 5: Solve for x
   x = 95,555,943.37/12,223.98
6. Step 6: Final answer
   x = 7,817.09