Finding the Fourth Proportional to 21,747.27, 30,010.72 and 12,795.35

Step by Step Solution

1. Step 1: Write the proportion equation
   21,747.27 : 30,010.72 = 12,795.35 : x
2. Step 2: Convert to fraction form
   21,747.27/30,010.72 = 12,795.35/x
3. Step 3: Cross multiply
   21,747.27x = 30,010.72 × 12,795.35
4. Step 4: Simplify right side
   21,747.27x = 383,997,666.15
5. Step 5: Solve for x
   x = 383,997,666.15/21,747.27
6. Step 6: Final answer
   x = 17,657.28