Finding the Fourth Proportional to 39,185.69, 54,079.58 and 22,192.90

Step by Step Solution

1. Step 1: Write the proportion equation
   39,185.69 : 54,079.58 = 22,192.90 : x
2. Step 2: Convert to fraction form
   39,185.69/54,079.58 = 22,192.90/x
3. Step 3: Cross multiply
   39,185.69x = 54,079.58 × 22,192.90
4. Step 4: Simplify right side
   39,185.69x = 1,200,182,631.27
5. Step 5: Solve for x
   x = 1,200,182,631.27/39,185.69
6. Step 6: Final answer
   x = 30,628.09