Finding the Fourth Proportional to 39,192.80, 54,085.32 and 22,196.79

Step by Step Solution

1. Step 1: Write the proportion equation
   39,192.80 : 54,085.32 = 22,196.79 : x
2. Step 2: Convert to fraction form
   39,192.80/54,085.32 = 22,196.79/x
3. Step 3: Cross multiply
   39,192.80x = 54,085.32 × 22,196.79
4. Step 4: Simplify right side
   39,192.80x = 1,200,520,490.12
5. Step 5: Solve for x
   x = 1,200,520,490.12/39,192.80
6. Step 6: Final answer
   x = 30,631.15