Finding the Fourth Proportional to 40,146.84, 55,398.60 and 22,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,146.84 : 55,398.60 = 22,238.50 : x
2. Step 2: Convert to fraction form
   40,146.84/55,398.60 = 22,238.50/x
3. Step 3: Cross multiply
   40,146.84x = 55,398.60 × 22,238.50
4. Step 4: Simplify right side
   40,146.84x = 1,231,981,766.10
5. Step 5: Solve for x
   x = 1,231,981,766.10/40,146.84
6. Step 6: Final answer
   x = 30,686.89