Finding the Fourth Proportional to 12,836.25, 17,714.42 and 7,171.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,836.25 : 17,714.42 = 7,171.25 : x
2. Step 2: Convert to fraction form
   12,836.25/17,714.42 = 7,171.25/x
3. Step 3: Cross multiply
   12,836.25x = 17,714.42 × 7,171.25
4. Step 4: Simplify right side
   12,836.25x = 127,034,436.89
5. Step 5: Solve for x
   x = 127,034,436.89/12,836.25
6. Step 6: Final answer
   x = 9,896.54