Finding the Fourth Proportional to 22,819.50, 31,491.59 and 12,748.37

Step by Step Solution

1. Step 1: Write the proportion equation
   22,819.50 : 31,491.59 = 12,748.37 : x
2. Step 2: Convert to fraction form
   22,819.50/31,491.59 = 12,748.37/x
3. Step 3: Cross multiply
   22,819.50x = 31,491.59 × 12,748.37
4. Step 4: Simplify right side
   22,819.50x = 401,466,441.21
5. Step 5: Solve for x
   x = 401,466,441.21/22,819.50
6. Step 6: Final answer
   x = 17,593.13