Finding the Fourth Proportional to 12,807.26, 17,674.02 and 7,142.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,807.26 : 17,674.02 = 7,142.52 : x
2. Step 2: Convert to fraction form
   12,807.26/17,674.02 = 7,142.52/x
3. Step 3: Cross multiply
   12,807.26x = 17,674.02 × 7,142.52
4. Step 4: Simplify right side
   12,807.26x = 126,237,041.33
5. Step 5: Solve for x
   x = 126,237,041.33/12,807.26
6. Step 6: Final answer
   x = 9,856.68