Finding the Fourth Proportional to 10,886.09, 16,336.43 and 3,960.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,886.09 : 16,336.43 = 3,960.59 : x
2. Step 2: Convert to fraction form
   10,886.09/16,336.43 = 3,960.59/x
3. Step 3: Cross multiply
   10,886.09x = 16,336.43 × 3,960.59
4. Step 4: Simplify right side
   10,886.09x = 64,701,922.33
5. Step 5: Solve for x
   x = 64,701,922.33/10,886.09
6. Step 6: Final answer
   x = 5,943.54