Finding the Fourth Proportional to 20,160.24, 30,111.30 and 16,005

Step by Step Solution

1. Step 1: Write the proportion equation
   20,160.24 : 30,111.30 = 16,005 : x
2. Step 2: Convert to fraction form
   20,160.24/30,111.30 = 16,005/x
3. Step 3: Cross multiply
   20,160.24x = 30,111.30 × 16,005
4. Step 4: Simplify right side
   20,160.24x = 481,931,356.50
5. Step 5: Solve for x
   x = 481,931,356.50/20,160.24
6. Step 6: Final answer
   x = 23,905.04