Finding the Fourth Proportional to 12,162.20, 16,785.54 and 7,384.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,162.20 : 16,785.54 = 7,384.52 : x
2. Step 2: Convert to fraction form
   12,162.20/16,785.54 = 7,384.52/x
3. Step 3: Cross multiply
   12,162.20x = 16,785.54 × 7,384.52
4. Step 4: Simplify right side
   12,162.20x = 123,953,197.80
5. Step 5: Solve for x
   x = 123,953,197.80/12,162.20
6. Step 6: Final answer
   x = 10,191.67