Finding the Fourth Proportional to 13,078.27, 18,048.05 and 7,109.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,078.27 : 18,048.05 = 7,109.94 : x
2. Step 2: Convert to fraction form
   13,078.27/18,048.05 = 7,109.94/x
3. Step 3: Cross multiply
   13,078.27x = 18,048.05 × 7,109.94
4. Step 4: Simplify right side
   13,078.27x = 128,320,552.62
5. Step 5: Solve for x
   x = 128,320,552.62/13,078.27
6. Step 6: Final answer
   x = 9,811.74