Finding the Fourth Proportional to 13,020.09, 17,969.52 and 7,983.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,020.09 : 17,969.52 = 7,983.42 : x
2. Step 2: Convert to fraction form
   13,020.09/17,969.52 = 7,983.42/x
3. Step 3: Cross multiply
   13,020.09x = 17,969.52 × 7,983.42
4. Step 4: Simplify right side
   13,020.09x = 143,458,225.36
5. Step 5: Solve for x
   x = 143,458,225.36/13,020.09
6. Step 6: Final answer
   x = 11,018.22