Finding the Fourth Proportional to 13,078.14, 18,049.37 and 7,772.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.14 : 18,049.37 = 7,772.96 : x
2. Step 2: Convert to fraction form
   13,078.14/18,049.37 = 7,772.96/x
3. Step 3: Cross multiply
   13,078.14x = 18,049.37 × 7,772.96
4. Step 4: Simplify right side
   13,078.14x = 140,296,901.92
5. Step 5: Solve for x
   x = 140,296,901.92/13,078.14
6. Step 6: Final answer
   x = 10,727.59