Finding the Fourth Proportional to 12,078.72, 16,669.80 and 7,367.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.72 : 16,669.80 = 7,367.76 : x
2. Step 2: Convert to fraction form
   12,078.72/16,669.80 = 7,367.76/x
3. Step 3: Cross multiply
   12,078.72x = 16,669.80 × 7,367.76
4. Step 4: Simplify right side
   12,078.72x = 122,819,085.65
5. Step 5: Solve for x
   x = 122,819,085.65/12,078.72
6. Step 6: Final answer
   x = 10,168.22