Finding the Fourth Proportional to 22,761.96, 31,413.56 and 13,811.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,761.96 : 31,413.56 = 13,811.72 : x
2. Step 2: Convert to fraction form
   22,761.96/31,413.56 = 13,811.72/x
3. Step 3: Cross multiply
   22,761.96x = 31,413.56 × 13,811.72
4. Step 4: Simplify right side
   22,761.96x = 433,875,294.92
5. Step 5: Solve for x
   x = 433,875,294.92/22,761.96
6. Step 6: Final answer
   x = 19,061.42