Finding the Fourth Proportional to 22,815.81, 31,483.98 and 12,743.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,815.81 : 31,483.98 = 12,743.46 : x
2. Step 2: Convert to fraction form
   22,815.81/31,483.98 = 12,743.46/x
3. Step 3: Cross multiply
   22,815.81x = 31,483.98 × 12,743.46
4. Step 4: Simplify right side
   22,815.81x = 401,214,839.77
5. Step 5: Solve for x
   x = 401,214,839.77/22,815.81
6. Step 6: Final answer
   x = 17,584.95