Finding the Fourth Proportional to 13,020.72, 17,968.32 and 7,052.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,020.72 : 17,968.32 = 7,052.16 : x
2. Step 2: Convert to fraction form
   13,020.72/17,968.32 = 7,052.16/x
3. Step 3: Cross multiply
   13,020.72x = 17,968.32 × 7,052.16
4. Step 4: Simplify right side
   13,020.72x = 126,715,467.57
5. Step 5: Solve for x
   x = 126,715,467.57/13,020.72
6. Step 6: Final answer
   x = 9,731.83