Finding the Fourth Proportional to 8,656.66, 11,945.89 and 5,471.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,656.66 : 11,945.89 = 5,471.69 : x
2. Step 2: Convert to fraction form
   8,656.66/11,945.89 = 5,471.69/x
3. Step 3: Cross multiply
   8,656.66x = 11,945.89 × 5,471.69
4. Step 4: Simplify right side
   8,656.66x = 65,364,133.45
5. Step 5: Solve for x
   x = 65,364,133.45/8,656.66
6. Step 6: Final answer
   x = 7,550.74