Finding the Fourth Proportional to 11,013.60, 15,198.71 and 5,977.77

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.60 : 15,198.71 = 5,977.77 : x
2. Step 2: Convert to fraction form
   11,013.60/15,198.71 = 5,977.77/x
3. Step 3: Cross multiply
   11,013.60x = 15,198.71 × 5,977.77
4. Step 4: Simplify right side
   11,013.60x = 90,854,417.47
5. Step 5: Solve for x
   x = 90,854,417.47/11,013.60
6. Step 6: Final answer
   x = 8,249.30