Finding the Fourth Proportional to 39,940.86, 55,118.56 and 22,036.39

Step by Step Solution

1. Step 1: Write the proportion equation
   39,940.86 : 55,118.56 = 22,036.39 : x
2. Step 2: Convert to fraction form
   39,940.86/55,118.56 = 22,036.39/x
3. Step 3: Cross multiply
   39,940.86x = 55,118.56 × 22,036.39
4. Step 4: Simplify right side
   39,940.86x = 1,214,614,084.40
5. Step 5: Solve for x
   x = 1,214,614,084.40/39,940.86
6. Step 6: Final answer
   x = 30,410.31