Finding the Fourth Proportional to 39,923.20, 55,096.50 and 22,018.18

Step by Step Solution

1. Step 1: Write the proportion equation
   39,923.20 : 55,096.50 = 22,018.18 : x
2. Step 2: Convert to fraction form
   39,923.20/55,096.50 = 22,018.18/x
3. Step 3: Cross multiply
   39,923.20x = 55,096.50 × 22,018.18
4. Step 4: Simplify right side
   39,923.20x = 1,213,124,654.37
5. Step 5: Solve for x
   x = 1,213,124,654.37/39,923.20
6. Step 6: Final answer
   x = 30,386.46