Finding the Fourth Proportional to 13,093.86, 18,067.78 and 7,786.74

Step by Step Solution

1. Step 1: Write the proportion equation
   13,093.86 : 18,067.78 = 7,786.74 : x
2. Step 2: Convert to fraction form
   13,093.86/18,067.78 = 7,786.74/x
3. Step 3: Cross multiply
   13,093.86x = 18,067.78 × 7,786.74
4. Step 4: Simplify right side
   13,093.86x = 140,689,105.24
5. Step 5: Solve for x
   x = 140,689,105.24/13,093.86
6. Step 6: Final answer
   x = 10,744.66