Finding the Fourth Proportional to 12,997.67, 17,936.78 and 7,029.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,997.67 : 17,936.78 = 7,029.33 : x
2. Step 2: Convert to fraction form
   12,997.67/17,936.78 = 7,029.33/x
3. Step 3: Cross multiply
   12,997.67x = 17,936.78 × 7,029.33
4. Step 4: Simplify right side
   12,997.67x = 126,083,570.60
5. Step 5: Solve for x
   x = 126,083,570.60/12,997.67
6. Step 6: Final answer
   x = 9,700.48