Finding the Fourth Proportional to 22,241.59, 30,689.13 and 12,681.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,241.59 : 30,689.13 = 12,681.30 : x
2. Step 2: Convert to fraction form
   22,241.59/30,689.13 = 12,681.30/x
3. Step 3: Cross multiply
   22,241.59x = 30,689.13 × 12,681.30
4. Step 4: Simplify right side
   22,241.59x = 389,178,064.27
5. Step 5: Solve for x
   x = 389,178,064.27/22,241.59
6. Step 6: Final answer
   x = 17,497.76