Finding the Fourth Proportional to 21,448, 32,189.28 and 11,062.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,448 : 32,189.28 = 11,062.72 : x
2. Step 2: Convert to fraction form
   21,448/32,189.28 = 11,062.72/x
3. Step 3: Cross multiply
   21,448x = 32,189.28 × 11,062.72
4. Step 4: Simplify right side
   21,448x = 356,100,991.64
5. Step 5: Solve for x
   x = 356,100,991.64/21,448
6. Step 6: Final answer
   x = 16,602.99