Finding the Fourth Proportional to 39,911.82, 55,080.78 and 22,006.79

Step by Step Solution

1. Step 1: Write the proportion equation
   39,911.82 : 55,080.78 = 22,006.79 : x
2. Step 2: Convert to fraction form
   39,911.82/55,080.78 = 22,006.79/x
3. Step 3: Cross multiply
   39,911.82x = 55,080.78 × 22,006.79
4. Step 4: Simplify right side
   39,911.82x = 1,212,151,158.50
5. Step 5: Solve for x
   x = 1,212,151,158.50/39,911.82
6. Step 6: Final answer
   x = 30,370.73