Finding the Fourth Proportional to 39,923.16, 55,092.76 and 22,018.15

Step by Step Solution

1. Step 1: Write the proportion equation
   39,923.16 : 55,092.76 = 22,018.15 : x
2. Step 2: Convert to fraction form
   39,923.16/55,092.76 = 22,018.15/x
3. Step 3: Cross multiply
   39,923.16x = 55,092.76 × 22,018.15
4. Step 4: Simplify right side
   39,923.16x = 1,213,040,653.59
5. Step 5: Solve for x
   x = 1,213,040,653.59/39,923.16
6. Step 6: Final answer
   x = 30,384.38