Finding the Fourth Proportional to 9,413.62, 13,004.31 and 7,522.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,413.62 : 13,004.31 = 7,522.72 : x
2. Step 2: Convert to fraction form
   9,413.62/13,004.31 = 7,522.72/x
3. Step 3: Cross multiply
   9,413.62x = 13,004.31 × 7,522.72
4. Step 4: Simplify right side
   9,413.62x = 97,827,782.92
5. Step 5: Solve for x
   x = 97,827,782.92/9,413.62
6. Step 6: Final answer
   x = 10,392.15