Finding the Fourth Proportional to 12,660.42, 17,472.86 and 7,627.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,660.42 : 17,472.86 = 7,627.18 : x
2. Step 2: Convert to fraction form
   12,660.42/17,472.86 = 7,627.18/x
3. Step 3: Cross multiply
   12,660.42x = 17,472.86 × 7,627.18
4. Step 4: Simplify right side
   12,660.42x = 133,268,648.33
5. Step 5: Solve for x
   x = 133,268,648.33/12,660.42
6. Step 6: Final answer
   x = 10,526.40