Finding the Fourth Proportional to 16,215.20, 24,314.69 and 7,442.63

Step by Step Solution

1. Step 1: Write the proportion equation
   16,215.20 : 24,314.69 = 7,442.63 : x
2. Step 2: Convert to fraction form
   16,215.20/24,314.69 = 7,442.63/x
3. Step 3: Cross multiply
   16,215.20x = 24,314.69 × 7,442.63
4. Step 4: Simplify right side
   16,215.20x = 180,965,138.27
5. Step 5: Solve for x
   x = 180,965,138.27/16,215.20
6. Step 6: Final answer
   x = 11,160.22