Finding the Fourth Proportional to 13,423.84, 18,526.52 and 8,119.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,423.84 : 18,526.52 = 8,119.15 : x
2. Step 2: Convert to fraction form
   13,423.84/18,526.52 = 8,119.15/x
3. Step 3: Cross multiply
   13,423.84x = 18,526.52 × 8,119.15
4. Step 4: Simplify right side
   13,423.84x = 150,419,594.86
5. Step 5: Solve for x
   x = 150,419,594.86/13,423.84
6. Step 6: Final answer
   x = 11,205.41