Finding the Fourth Proportional to 11,661.91, 17,495.39 and 3,764.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,661.91 : 17,495.39 = 3,764.87 : x
2. Step 2: Convert to fraction form
   11,661.91/17,495.39 = 3,764.87/x
3. Step 3: Cross multiply
   11,661.91x = 17,495.39 × 3,764.87
4. Step 4: Simplify right side
   11,661.91x = 65,867,831.89
5. Step 5: Solve for x
   x = 65,867,831.89/11,661.91
6. Step 6: Final answer
   x = 5,648.12