Finding the Fourth Proportional to 40,287.43, 55,597.64 and 22,138

Step by Step Solution

1. Step 1: Write the proportion equation
   40,287.43 : 55,597.64 = 22,138 : x
2. Step 2: Convert to fraction form
   40,287.43/55,597.64 = 22,138/x
3. Step 3: Cross multiply
   40,287.43x = 55,597.64 × 22,138
4. Step 4: Simplify right side
   40,287.43x = 1,230,820,554.32
5. Step 5: Solve for x
   x = 1,230,820,554.32/40,287.43
6. Step 6: Final answer
   x = 30,550.99