Finding the Fourth Proportional to 12,797.15, 17,659.53 and 7,131.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,797.15 : 17,659.53 = 7,131.60 : x
2. Step 2: Convert to fraction form
   12,797.15/17,659.53 = 7,131.60/x
3. Step 3: Cross multiply
   12,797.15x = 17,659.53 × 7,131.60
4. Step 4: Simplify right side
   12,797.15x = 125,940,704.15
5. Step 5: Solve for x
   x = 125,940,704.15/12,797.15
6. Step 6: Final answer
   x = 9,841.31