Finding the Fourth Proportional to 39,945.48, 55,123.83 and 22,040.48

Step by Step Solution

1. Step 1: Write the proportion equation
   39,945.48 : 55,123.83 = 22,040.48 : x
2. Step 2: Convert to fraction form
   39,945.48/55,123.83 = 22,040.48/x
3. Step 3: Cross multiply
   39,945.48x = 55,123.83 × 22,040.48
4. Step 4: Simplify right side
   39,945.48x = 1,214,955,397.02
5. Step 5: Solve for x
   x = 1,214,955,397.02/39,945.48
6. Step 6: Final answer
   x = 30,415.34