Finding the Fourth Proportional to 40,028.51, 55,239.41 and 22,123.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,028.51 : 55,239.41 = 22,123.50 : x
2. Step 2: Convert to fraction form
   40,028.51/55,239.41 = 22,123.50/x
3. Step 3: Cross multiply
   40,028.51x = 55,239.41 × 22,123.50
4. Step 4: Simplify right side
   40,028.51x = 1,222,088,976.52
5. Step 5: Solve for x
   x = 1,222,088,976.52/40,028.51
6. Step 6: Final answer
   x = 30,530.47