Finding the Fourth Proportional to 20,128.06, 30,196.83 and 19,793.35

Step by Step Solution

1. Step 1: Write the proportion equation
   20,128.06 : 30,196.83 = 19,793.35 : x
2. Step 2: Convert to fraction form
   20,128.06/30,196.83 = 19,793.35/x
3. Step 3: Cross multiply
   20,128.06x = 30,196.83 × 19,793.35
4. Step 4: Simplify right side
   20,128.06x = 597,696,349.59
5. Step 5: Solve for x
   x = 597,696,349.59/20,128.06
6. Step 6: Final answer
   x = 29,694.69