Finding the Fourth Proportional to 22,456.28, 31,003 and 19,965.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.28 : 31,003 = 19,965.36 : x
2. Step 2: Convert to fraction form
   22,456.28/31,003 = 19,965.36/x
3. Step 3: Cross multiply
   22,456.28x = 31,003 × 19,965.36
4. Step 4: Simplify right side
   22,456.28x = 618,986,056.08
5. Step 5: Solve for x
   x = 618,986,056.08/22,456.28
6. Step 6: Final answer
   x = 27,564.05