Finding the Fourth Proportional to 22,128.32, 33,196.64 and 9,648.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,128.32 : 33,196.64 = 9,648.32 : x
2. Step 2: Convert to fraction form
   22,128.32/33,196.64 = 9,648.32/x
3. Step 3: Cross multiply
   22,128.32x = 33,196.64 × 9,648.32
4. Step 4: Simplify right side
   22,128.32x = 320,291,805.64
5. Step 5: Solve for x
   x = 320,291,805.64/22,128.32
6. Step 6: Final answer
   x = 14,474.29