Finding the Fourth Proportional to 9,064.74, 12,509.54 and 5,086.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,064.74 : 12,509.54 = 5,086.12 : x
2. Step 2: Convert to fraction form
   9,064.74/12,509.54 = 5,086.12/x
3. Step 3: Cross multiply
   9,064.74x = 12,509.54 × 5,086.12
4. Step 4: Simplify right side
   9,064.74x = 63,625,021.58
5. Step 5: Solve for x
   x = 63,625,021.58/9,064.74
6. Step 6: Final answer
   x = 7,018.96