Finding the Fourth Proportional to 12,795.75, 17,659.43 and 7,131.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,795.75 : 17,659.43 = 7,131.42 : x
2. Step 2: Convert to fraction form
   12,795.75/17,659.43 = 7,131.42/x
3. Step 3: Cross multiply
   12,795.75x = 17,659.43 × 7,131.42
4. Step 4: Simplify right side
   12,795.75x = 125,936,812.29
5. Step 5: Solve for x
   x = 125,936,812.29/12,795.75
6. Step 6: Final answer
   x = 9,842.08