Finding the Fourth Proportional to 22,924.50, 31,636.29 and 12,988.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,924.50 : 31,636.29 = 12,988.50 : x
2. Step 2: Convert to fraction form
   22,924.50/31,636.29 = 12,988.50/x
3. Step 3: Cross multiply
   22,924.50x = 31,636.29 × 12,988.50
4. Step 4: Simplify right side
   22,924.50x = 410,907,952.67
5. Step 5: Solve for x
   x = 410,907,952.67/22,924.50
6. Step 6: Final answer
   x = 17,924.40