Finding the Fourth Proportional to 12,322.16, 17,007.54 and 7,018.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,322.16 : 17,007.54 = 7,018.28 : x
2. Step 2: Convert to fraction form
   12,322.16/17,007.54 = 7,018.28/x
3. Step 3: Cross multiply
   12,322.16x = 17,007.54 × 7,018.28
4. Step 4: Simplify right side
   12,322.16x = 119,363,677.83
5. Step 5: Solve for x
   x = 119,363,677.83/12,322.16
6. Step 6: Final answer
   x = 9,686.91