Finding the Fourth Proportional to 13,158.27, 18,152.49 and 8,122.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158.27 : 18,152.49 = 8,122.69 : x
2. Step 2: Convert to fraction form
   13,158.27/18,152.49 = 8,122.69/x
3. Step 3: Cross multiply
   13,158.27x = 18,152.49 × 8,122.69
4. Step 4: Simplify right side
   13,158.27x = 147,447,049.00
5. Step 5: Solve for x
   x = 147,447,049.00/13,158.27
6. Step 6: Final answer
   x = 11,205.66