Finding the Fourth Proportional to 39,910.50, 55,078.98 and 22,005.48

Step by Step Solution

1. Step 1: Write the proportion equation
   39,910.50 : 55,078.98 = 22,005.48 : x
2. Step 2: Convert to fraction form
   39,910.50/55,078.98 = 22,005.48/x
3. Step 3: Cross multiply
   39,910.50x = 55,078.98 × 22,005.48
4. Step 4: Simplify right side
   39,910.50x = 1,212,039,117.42
5. Step 5: Solve for x
   x = 1,212,039,117.42/39,910.50
6. Step 6: Final answer
   x = 30,368.93