Finding the Fourth Proportional to 12,078.99, 18,096.78 and 7,396.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,078.99 : 18,096.78 = 7,396.77 : x
2. Step 2: Convert to fraction form
   12,078.99/18,096.78 = 7,396.77/x
3. Step 3: Cross multiply
   12,078.99x = 18,096.78 × 7,396.77
4. Step 4: Simplify right side
   12,078.99x = 133,857,719.40
5. Step 5: Solve for x
   x = 133,857,719.40/12,078.99
6. Step 6: Final answer
   x = 11,081.86