Finding the Fourth Proportional to 21,820.34, 30,113.35 and 16,433.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,820.34 : 30,113.35 = 16,433.27 : x
2. Step 2: Convert to fraction form
   21,820.34/30,113.35 = 16,433.27/x
3. Step 3: Cross multiply
   21,820.34x = 30,113.35 × 16,433.27
4. Step 4: Simplify right side
   21,820.34x = 494,860,821.49
5. Step 5: Solve for x
   x = 494,860,821.49/21,820.34
6. Step 6: Final answer
   x = 22,678.88