Finding the Fourth Proportional to 22,020.46, 33,057.92 and 20,857.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,020.46 : 33,057.92 = 20,857.94 : x
2. Step 2: Convert to fraction form
   22,020.46/33,057.92 = 20,857.94/x
3. Step 3: Cross multiply
   22,020.46x = 33,057.92 × 20,857.94
4. Step 4: Simplify right side
   22,020.46x = 689,520,111.88
5. Step 5: Solve for x
   x = 689,520,111.88/22,020.46
6. Step 6: Final answer
   x = 31,312.70