Finding the Fourth Proportional to 11,086.60, 16,616.67 and 5,155.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.60 : 16,616.67 = 5,155.48 : x
2. Step 2: Convert to fraction form
   11,086.60/16,616.67 = 5,155.48/x
3. Step 3: Cross multiply
   11,086.60x = 16,616.67 × 5,155.48
4. Step 4: Simplify right side
   11,086.60x = 85,666,826.77
5. Step 5: Solve for x
   x = 85,666,826.77/11,086.60
6. Step 6: Final answer
   x = 7,727.06