Finding the Fourth Proportional to 9,311.25, 12,849.53 and 5,119.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,311.25 : 12,849.53 = 5,119.53 : x
2. Step 2: Convert to fraction form
   9,311.25/12,849.53 = 5,119.53/x
3. Step 3: Cross multiply
   9,311.25x = 12,849.53 × 5,119.53
4. Step 4: Simplify right side
   9,311.25x = 65,783,528.72
5. Step 5: Solve for x
   x = 65,783,528.72/9,311.25
6. Step 6: Final answer
   x = 7,064.95