Finding the Fourth Proportional to 22,885.50, 31,582.47 and 12,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,885.50 : 31,582.47 = 12,949.50 : x
2. Step 2: Convert to fraction form
   22,885.50/31,582.47 = 12,949.50/x
3. Step 3: Cross multiply
   22,885.50x = 31,582.47 × 12,949.50
4. Step 4: Simplify right side
   22,885.50x = 408,977,195.27
5. Step 5: Solve for x
   x = 408,977,195.27/22,885.50
6. Step 6: Final answer
   x = 17,870.58