Finding the Fourth Proportional to 12,569.38, 17,345.61 and 6,980.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,569.38 : 17,345.61 = 6,980.42 : x
2. Step 2: Convert to fraction form
   12,569.38/17,345.61 = 6,980.42/x
3. Step 3: Cross multiply
   12,569.38x = 17,345.61 × 6,980.42
4. Step 4: Simplify right side
   12,569.38x = 121,079,642.96
5. Step 5: Solve for x
   x = 121,079,642.96/12,569.38
6. Step 6: Final answer
   x = 9,632.90