Finding the Fourth Proportional to 8,910.82, 12,297.30 and 4,931.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,910.82 : 12,297.30 = 4,931.86 : x
2. Step 2: Convert to fraction form
   8,910.82/12,297.30 = 4,931.86/x
3. Step 3: Cross multiply
   8,910.82x = 12,297.30 × 4,931.86
4. Step 4: Simplify right side
   8,910.82x = 60,648,561.98
5. Step 5: Solve for x
   x = 60,648,561.98/8,910.82
6. Step 6: Final answer
   x = 6,806.17