Finding the Fourth Proportional to 13,012.33, 17,952.81 and 7,971.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.33 : 17,952.81 = 7,971.31 : x
2. Step 2: Convert to fraction form
   13,012.33/17,952.81 = 7,971.31/x
3. Step 3: Cross multiply
   13,012.33x = 17,952.81 × 7,971.31
4. Step 4: Simplify right side
   13,012.33x = 143,107,413.88
5. Step 5: Solve for x
   x = 143,107,413.88/13,012.33
6. Step 6: Final answer
   x = 10,997.83