Finding the Fourth Proportional to 22,971.89, 31,703.25 and 13,538.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,971.89 : 31,703.25 = 13,538.63 : x
2. Step 2: Convert to fraction form
   22,971.89/31,703.25 = 13,538.63/x
3. Step 3: Cross multiply
   22,971.89x = 31,703.25 × 13,538.63
4. Step 4: Simplify right side
   22,971.89x = 429,218,413.03
5. Step 5: Solve for x
   x = 429,218,413.03/22,971.89
6. Step 6: Final answer
   x = 18,684.51