Finding the Fourth Proportional to 9,413.96, 12,992.82 and 5,223.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,413.96 : 12,992.82 = 5,223.56 : x
2. Step 2: Convert to fraction form
   9,413.96/12,992.82 = 5,223.56/x
3. Step 3: Cross multiply
   9,413.96x = 12,992.82 × 5,223.56
4. Step 4: Simplify right side
   9,413.96x = 67,868,774.84
5. Step 5: Solve for x
   x = 67,868,774.84/9,413.96
6. Step 6: Final answer
   x = 7,209.38