Finding the Fourth Proportional to 13,018.80, 17,965.56 and 7,353.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.80 : 17,965.56 = 7,353.78 : x
2. Step 2: Convert to fraction form
   13,018.80/17,965.56 = 7,353.78/x
3. Step 3: Cross multiply
   13,018.80x = 17,965.56 × 7,353.78
4. Step 4: Simplify right side
   13,018.80x = 132,114,775.82
5. Step 5: Solve for x
   x = 132,114,775.82/13,018.80
6. Step 6: Final answer
   x = 10,148.00