Finding the Fourth Proportional to 12,640.51, 17,443.72 and 6,975.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,640.51 : 17,443.72 = 6,975.83 : x
2. Step 2: Convert to fraction form
   12,640.51/17,443.72 = 6,975.83/x
3. Step 3: Cross multiply
   12,640.51x = 17,443.72 × 6,975.83
4. Step 4: Simplify right side
   12,640.51x = 121,684,425.29
5. Step 5: Solve for x
   x = 121,684,425.29/12,640.51
6. Step 6: Final answer
   x = 9,626.54