Finding the Fourth Proportional to 22,949.48, 31,674.76 and 13,390.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,949.48 : 31,674.76 = 13,390.50 : x
2. Step 2: Convert to fraction form
   22,949.48/31,674.76 = 13,390.50/x
3. Step 3: Cross multiply
   22,949.48x = 31,674.76 × 13,390.50
4. Step 4: Simplify right side
   22,949.48x = 424,140,873.78
5. Step 5: Solve for x
   x = 424,140,873.78/22,949.48
6. Step 6: Final answer
   x = 18,481.50