Finding the Fourth Proportional to 40,221, 55,504.98 and 22,318.68

Step by Step Solution

1. Step 1: Write the proportion equation
   40,221 : 55,504.98 = 22,318.68 : x
2. Step 2: Convert to fraction form
   40,221/55,504.98 = 22,318.68/x
3. Step 3: Cross multiply
   40,221x = 55,504.98 × 22,318.68
4. Step 4: Simplify right side
   40,221x = 1,238,797,887.03
5. Step 5: Solve for x
   x = 1,238,797,887.03/40,221
6. Step 6: Final answer
   x = 30,799.78