Finding the Fourth Proportional to 39,991.46, 55,186.72 and 22,086.08

Step by Step Solution

1. Step 1: Write the proportion equation
   39,991.46 : 55,186.72 = 22,086.08 : x
2. Step 2: Convert to fraction form
   39,991.46/55,186.72 = 22,086.08/x
3. Step 3: Cross multiply
   39,991.46x = 55,186.72 × 22,086.08
4. Step 4: Simplify right side
   39,991.46x = 1,218,858,406.03
5. Step 5: Solve for x
   x = 1,218,858,406.03/39,991.46
6. Step 6: Final answer
   x = 30,477.97