Finding the Fourth Proportional to 16,028.72, 24,045.85 and 7,147.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,028.72 : 24,045.85 = 7,147.21 : x
2. Step 2: Convert to fraction form
   16,028.72/24,045.85 = 7,147.21/x
3. Step 3: Cross multiply
   16,028.72x = 24,045.85 × 7,147.21
4. Step 4: Simplify right side
   16,028.72x = 171,860,688.40
5. Step 5: Solve for x
   x = 171,860,688.40/16,028.72
6. Step 6: Final answer
   x = 10,722.05