Finding the Fourth Proportional to 9,309.72, 12,847.50 and 5,118

Step by Step Solution

1. Step 1: Write the proportion equation
   9,309.72 : 12,847.50 = 5,118 : x
2. Step 2: Convert to fraction form
   9,309.72/12,847.50 = 5,118/x
3. Step 3: Cross multiply
   9,309.72x = 12,847.50 × 5,118
4. Step 4: Simplify right side
   9,309.72x = 65,753,505
5. Step 5: Solve for x
   x = 65,753,505/9,309.72
6. Step 6: Final answer
   x = 7,062.89