Finding the Fourth Proportional to 9,472.67, 13,072.39 and 5,223.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,472.67 : 13,072.39 = 5,223.89 : x
2. Step 2: Convert to fraction form
   9,472.67/13,072.39 = 5,223.89/x
3. Step 3: Cross multiply
   9,472.67x = 13,072.39 × 5,223.89
4. Step 4: Simplify right side
   9,472.67x = 68,288,648.98
5. Step 5: Solve for x
   x = 68,288,648.98/9,472.67
6. Step 6: Final answer
   x = 7,209.02