Finding the Fourth Proportional to 13,377.52, 18,462.60 and 7,788.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,377.52 : 18,462.60 = 7,788.56 : x
2. Step 2: Convert to fraction form
   13,377.52/18,462.60 = 7,788.56/x
3. Step 3: Cross multiply
   13,377.52x = 18,462.60 × 7,788.56
4. Step 4: Simplify right side
   13,377.52x = 143,797,067.86
5. Step 5: Solve for x
   x = 143,797,067.86/13,377.52
6. Step 6: Final answer
   x = 10,749.16