Finding the Fourth Proportional to 16,221.52, 24,336 and 5,128.16

Step by Step Solution

1. Step 1: Write the proportion equation
   16,221.52 : 24,336 = 5,128.16 : x
2. Step 2: Convert to fraction form
   16,221.52/24,336 = 5,128.16/x
3. Step 3: Cross multiply
   16,221.52x = 24,336 × 5,128.16
4. Step 4: Simplify right side
   16,221.52x = 124,798,901.76
5. Step 5: Solve for x
   x = 124,798,901.76/16,221.52
6. Step 6: Final answer
   x = 7,693.42