Finding the Fourth Proportional to 22,878.37, 31,572.72 and 12,806.73

Step by Step Solution

1. Step 1: Write the proportion equation
   22,878.37 : 31,572.72 = 12,806.73 : x
2. Step 2: Convert to fraction form
   22,878.37/31,572.72 = 12,806.73/x
3. Step 3: Cross multiply
   22,878.37x = 31,572.72 × 12,806.73
4. Step 4: Simplify right side
   22,878.37x = 404,343,300.41
5. Step 5: Solve for x
   x = 404,343,300.41/22,878.37
6. Step 6: Final answer
   x = 17,673.61