Finding the Fourth Proportional to 22,293.10, 30,760.59 and 12,728.62

Step by Step Solution

1. Step 1: Write the proportion equation
   22,293.10 : 30,760.59 = 12,728.62 : x
2. Step 2: Convert to fraction form
   22,293.10/30,760.59 = 12,728.62/x
3. Step 3: Cross multiply
   22,293.10x = 30,760.59 × 12,728.62
4. Step 4: Simplify right side
   22,293.10x = 391,539,861.09
5. Step 5: Solve for x
   x = 391,539,861.09/22,293.10
6. Step 6: Final answer
   x = 17,563.28