Finding the Fourth Proportional to 12,796.88, 17,659.52 and 7,131.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,796.88 : 17,659.52 = 7,131.86 : x
2. Step 2: Convert to fraction form
   12,796.88/17,659.52 = 7,131.86/x
3. Step 3: Cross multiply
   12,796.88x = 17,659.52 × 7,131.86
4. Step 4: Simplify right side
   12,796.88x = 125,945,188.65
5. Step 5: Solve for x
   x = 125,945,188.65/12,796.88
6. Step 6: Final answer
   x = 9,841.87