Finding the Fourth Proportional to 8,910.72, 12,296.48 and 4,931.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,910.72 : 12,296.48 = 4,931.84 : x
2. Step 2: Convert to fraction form
   8,910.72/12,296.48 = 4,931.84/x
3. Step 3: Cross multiply
   8,910.72x = 12,296.48 × 4,931.84
4. Step 4: Simplify right side
   8,910.72x = 60,644,271.92
5. Step 5: Solve for x
   x = 60,644,271.92/8,910.72
6. Step 6: Final answer
   x = 6,805.77