Finding the Fourth Proportional to 12,410.97, 18,573.51 and 7,665.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,410.97 : 18,573.51 = 7,665.18 : x
2. Step 2: Convert to fraction form
   12,410.97/18,573.51 = 7,665.18/x
3. Step 3: Cross multiply
   12,410.97x = 18,573.51 × 7,665.18
4. Step 4: Simplify right side
   12,410.97x = 142,369,297.38
5. Step 5: Solve for x
   x = 142,369,297.38/12,410.97
6. Step 6: Final answer
   x = 11,471.25