Finding the Fourth Proportional to 11,286.82, 16,931.71 and 3,889.29

Step by Step Solution

1. Step 1: Write the proportion equation
   11,286.82 : 16,931.71 = 3,889.29 : x
2. Step 2: Convert to fraction form
   11,286.82/16,931.71 = 3,889.29/x
3. Step 3: Cross multiply
   11,286.82x = 16,931.71 × 3,889.29
4. Step 4: Simplify right side
   11,286.82x = 65,852,330.39
5. Step 5: Solve for x
   x = 65,852,330.39/11,286.82
6. Step 6: Final answer
   x = 5,834.44