Finding the Fourth Proportional to 22,728.72, 34,091.58 and 10,890.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,728.72 : 34,091.58 = 10,890.96 : x
2. Step 2: Convert to fraction form
   22,728.72/34,091.58 = 10,890.96/x
3. Step 3: Cross multiply
   22,728.72x = 34,091.58 × 10,890.96
4. Step 4: Simplify right side
   22,728.72x = 371,290,034.12
5. Step 5: Solve for x
   x = 371,290,034.12/22,728.72
6. Step 6: Final answer
   x = 16,335.72