Finding the Fourth Proportional to 21,333.72, 32,028.30 and 16,406.85

Step by Step Solution

1. Step 1: Write the proportion equation
   21,333.72 : 32,028.30 = 16,406.85 : x
2. Step 2: Convert to fraction form
   21,333.72/32,028.30 = 16,406.85/x
3. Step 3: Cross multiply
   21,333.72x = 32,028.30 × 16,406.85
4. Step 4: Simplify right side
   21,333.72x = 525,483,513.86
5. Step 5: Solve for x
   x = 525,483,513.86/21,333.72
6. Step 6: Final answer
   x = 24,631.59