Finding the Fourth Proportional to 13,018.19, 17,960.27 and 8,544.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.19 : 17,960.27 = 8,544.42 : x
2. Step 2: Convert to fraction form
   13,018.19/17,960.27 = 8,544.42/x
3. Step 3: Cross multiply
   13,018.19x = 17,960.27 × 8,544.42
4. Step 4: Simplify right side
   13,018.19x = 153,460,047.47
5. Step 5: Solve for x
   x = 153,460,047.47/13,018.19
6. Step 6: Final answer
   x = 11,788.13