Finding the Fourth Proportional to 12,640.64, 17,444.16 and 7,052.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,640.64 : 17,444.16 = 7,052.16 : x
2. Step 2: Convert to fraction form
   12,640.64/17,444.16 = 7,052.16/x
3. Step 3: Cross multiply
   12,640.64x = 17,444.16 × 7,052.16
4. Step 4: Simplify right side
   12,640.64x = 123,019,007.39
5. Step 5: Solve for x
   x = 123,019,007.39/12,640.64
6. Step 6: Final answer
   x = 9,732.02