Finding the Fourth Proportional to 13,006.72, 17,950.56 and 7,418.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,006.72 : 17,950.56 = 7,418.56 : x
2. Step 2: Convert to fraction form
   13,006.72/17,950.56 = 7,418.56/x
3. Step 3: Cross multiply
   13,006.72x = 17,950.56 × 7,418.56
4. Step 4: Simplify right side
   13,006.72x = 133,167,306.39
5. Step 5: Solve for x
   x = 133,167,306.39/13,006.72
6. Step 6: Final answer
   x = 10,238.35