Finding the Fourth Proportional to 31,603.72, 47,413.98 and 9,417.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,603.72 : 47,413.98 = 9,417.16 : x
2. Step 2: Convert to fraction form
   31,603.72/47,413.98 = 9,417.16/x
3. Step 3: Cross multiply
   31,603.72x = 47,413.98 × 9,417.16
4. Step 4: Simplify right side
   31,603.72x = 446,505,035.90
5. Step 5: Solve for x
   x = 446,505,035.90/31,603.72
6. Step 6: Final answer
   x = 14,128.24