Finding the Fourth Proportional to 21,736.23, 30,019.67 and 17,501.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,736.23 : 30,019.67 = 17,501.31 : x
2. Step 2: Convert to fraction form
   21,736.23/30,019.67 = 17,501.31/x
3. Step 3: Cross multiply
   21,736.23x = 30,019.67 × 17,501.31
4. Step 4: Simplify right side
   21,736.23x = 525,383,528.89
5. Step 5: Solve for x
   x = 525,383,528.89/21,736.23
6. Step 6: Final answer
   x = 24,170.87