Finding the Fourth Proportional to 21,466.20, 32,156.04 and 13,647

Step by Step Solution

1. Step 1: Write the proportion equation
   21,466.20 : 32,156.04 = 13,647 : x
2. Step 2: Convert to fraction form
   21,466.20/32,156.04 = 13,647/x
3. Step 3: Cross multiply
   21,466.20x = 32,156.04 × 13,647
4. Step 4: Simplify right side
   21,466.20x = 438,833,477.88
5. Step 5: Solve for x
   x = 438,833,477.88/21,466.20
6. Step 6: Final answer
   x = 20,443.00