Finding the Fourth Proportional to 39,948.48, 55,128.86 and 22,043.48

Step by Step Solution

1. Step 1: Write the proportion equation
   39,948.48 : 55,128.86 = 22,043.48 : x
2. Step 2: Convert to fraction form
   39,948.48/55,128.86 = 22,043.48/x
3. Step 3: Cross multiply
   39,948.48x = 55,128.86 × 22,043.48
4. Step 4: Simplify right side
   39,948.48x = 1,215,231,922.83
5. Step 5: Solve for x
   x = 1,215,231,922.83/39,948.48
6. Step 6: Final answer
   x = 30,419.98