Finding the Fourth Proportional to 10,786.89, 16,180.32 and 3,391.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,786.89 : 16,180.32 = 3,391.99 : x
2. Step 2: Convert to fraction form
   10,786.89/16,180.32 = 3,391.99/x
3. Step 3: Cross multiply
   10,786.89x = 16,180.32 × 3,391.99
4. Step 4: Simplify right side
   10,786.89x = 54,883,483.64
5. Step 5: Solve for x
   x = 54,883,483.64/10,786.89
6. Step 6: Final answer
   x = 5,087.98