Finding the Fourth Proportional to 39,922.62, 55,093.61 and 22,018.31

Step by Step Solution

1. Step 1: Write the proportion equation
   39,922.62 : 55,093.61 = 22,018.31 : x
2. Step 2: Convert to fraction form
   39,922.62/55,093.61 = 22,018.31/x
3. Step 3: Cross multiply
   39,922.62x = 55,093.61 × 22,018.31
4. Step 4: Simplify right side
   39,922.62x = 1,213,068,376.78
5. Step 5: Solve for x
   x = 1,213,068,376.78/39,922.62
6. Step 6: Final answer
   x = 30,385.49