Finding the Fourth Proportional to 13,017.80, 17,964.18 and 7,352.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,017.80 : 17,964.18 = 7,352.78 : x
2. Step 2: Convert to fraction form
   13,017.80/17,964.18 = 7,352.78/x
3. Step 3: Cross multiply
   13,017.80x = 17,964.18 × 7,352.78
4. Step 4: Simplify right side
   13,017.80x = 132,086,663.42
5. Step 5: Solve for x
   x = 132,086,663.42/13,017.80
6. Step 6: Final answer
   x = 10,146.62