Finding the Fourth Proportional to 9,311.09, 12,849.93 and 5,119.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,311.09 : 12,849.93 = 5,119.34 : x
2. Step 2: Convert to fraction form
   9,311.09/12,849.93 = 5,119.34/x
3. Step 3: Cross multiply
   9,311.09x = 12,849.93 × 5,119.34
4. Step 4: Simplify right side
   9,311.09x = 65,783,096.40
5. Step 5: Solve for x
   x = 65,783,096.40/9,311.09
6. Step 6: Final answer
   x = 7,065.03