Finding the Fourth Proportional to 12,662.78, 17,472.39 and 7,625.66

Step by Step Solution

1. Step 1: Write the proportion equation
   12,662.78 : 17,472.39 = 7,625.66 : x
2. Step 2: Convert to fraction form
   12,662.78/17,472.39 = 7,625.66/x
3. Step 3: Cross multiply
   12,662.78x = 17,472.39 × 7,625.66
4. Step 4: Simplify right side
   12,662.78x = 133,238,505.53
5. Step 5: Solve for x
   x = 133,238,505.53/12,662.78
6. Step 6: Final answer
   x = 10,522.06