Finding the Fourth Proportional to 11,308.35, 16,958.46 and 3,910.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,308.35 : 16,958.46 = 3,910.80 : x
2. Step 2: Convert to fraction form
   11,308.35/16,958.46 = 3,910.80/x
3. Step 3: Cross multiply
   11,308.35x = 16,958.46 × 3,910.80
4. Step 4: Simplify right side
   11,308.35x = 66,321,145.37
5. Step 5: Solve for x
   x = 66,321,145.37/11,308.35
6. Step 6: Final answer
   x = 5,864.79