Finding the Fourth Proportional to 12,837.31, 17,714.33 and 7,171.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,837.31 : 17,714.33 = 7,171.27 : x
2. Step 2: Convert to fraction form
   12,837.31/17,714.33 = 7,171.27/x
3. Step 3: Cross multiply
   12,837.31x = 17,714.33 × 7,171.27
4. Step 4: Simplify right side
   12,837.31x = 127,034,243.30
5. Step 5: Solve for x
   x = 127,034,243.30/12,837.31
6. Step 6: Final answer
   x = 9,895.71