Finding the Fourth Proportional to 9,310.12, 12,847.86 and 5,118.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,310.12 : 12,847.86 = 5,118.28 : x
2. Step 2: Convert to fraction form
   9,310.12/12,847.86 = 5,118.28/x
3. Step 3: Cross multiply
   9,310.12x = 12,847.86 × 5,118.28
4. Step 4: Simplify right side
   9,310.12x = 65,758,944.88
5. Step 5: Solve for x
   x = 65,758,944.88/9,310.12
6. Step 6: Final answer
   x = 7,063.17