Finding the Fourth Proportional to 8,910.81, 12,296.61 and 4,932.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,910.81 : 12,296.61 = 4,932.09 : x
2. Step 2: Convert to fraction form
   8,910.81/12,296.61 = 4,932.09/x
3. Step 3: Cross multiply
   8,910.81x = 12,296.61 × 4,932.09
4. Step 4: Simplify right side
   8,910.81x = 60,647,987.21
5. Step 5: Solve for x
   x = 60,647,987.21/8,910.81
6. Step 6: Final answer
   x = 6,806.11