Finding the Fourth Proportional to 22,243.98, 30,707.80 and 12,810.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,243.98 : 30,707.80 = 12,810.72 : x
2. Step 2: Convert to fraction form
   22,243.98/30,707.80 = 12,810.72/x
3. Step 3: Cross multiply
   22,243.98x = 30,707.80 × 12,810.72
4. Step 4: Simplify right side
   22,243.98x = 393,389,027.62
5. Step 5: Solve for x
   x = 393,389,027.62/22,243.98
6. Step 6: Final answer
   x = 17,685.19