Finding the Fourth Proportional to 20,714.09, 31,053.69 and 9,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,714.09 : 31,053.69 = 9,018.50 : x
2. Step 2: Convert to fraction form
   20,714.09/31,053.69 = 9,018.50/x
3. Step 3: Cross multiply
   20,714.09x = 31,053.69 × 9,018.50
4. Step 4: Simplify right side
   20,714.09x = 280,057,703.27
5. Step 5: Solve for x
   x = 280,057,703.27/20,714.09
6. Step 6: Final answer
   x = 13,520.15