Finding the Fourth Proportional to 9,019.72, 13,514.10 and 8,106.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,019.72 : 13,514.10 = 8,106.67 : x
2. Step 2: Convert to fraction form
   9,019.72/13,514.10 = 8,106.67/x
3. Step 3: Cross multiply
   9,019.72x = 13,514.10 × 8,106.67
4. Step 4: Simplify right side
   9,019.72x = 109,554,349.05
5. Step 5: Solve for x
   x = 109,554,349.05/9,019.72
6. Step 6: Final answer
   x = 12,146.09