Finding the Fourth Proportional to 13,986.59, 19,304.78 and 8,018.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,986.59 : 19,304.78 = 8,018.15 : x
2. Step 2: Convert to fraction form
   13,986.59/19,304.78 = 8,018.15/x
3. Step 3: Cross multiply
   13,986.59x = 19,304.78 × 8,018.15
4. Step 4: Simplify right side
   13,986.59x = 154,788,485.14
5. Step 5: Solve for x
   x = 154,788,485.14/13,986.59
6. Step 6: Final answer
   x = 11,066.92