Finding the Fourth Proportional to 11,379.94, 15,694.50 and 7,399.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,379.94 : 15,694.50 = 7,399.60 : x
2. Step 2: Convert to fraction form
   11,379.94/15,694.50 = 7,399.60/x
3. Step 3: Cross multiply
   11,379.94x = 15,694.50 × 7,399.60
4. Step 4: Simplify right side
   11,379.94x = 116,133,022.20
5. Step 5: Solve for x
   x = 116,133,022.20/11,379.94
6. Step 6: Final answer
   x = 10,205.06