Finding the Fourth Proportional to 22,398.72, 30,843.57 and 21,901.49

Step by Step Solution

1. Step 1: Write the proportion equation
   22,398.72 : 30,843.57 = 21,901.49 : x
2. Step 2: Convert to fraction form
   22,398.72/30,843.57 = 21,901.49/x
3. Step 3: Cross multiply
   22,398.72x = 30,843.57 × 21,901.49
4. Step 4: Simplify right side
   22,398.72x = 675,519,985.70
5. Step 5: Solve for x
   x = 675,519,985.70/22,398.72
6. Step 6: Final answer
   x = 30,158.87