Finding the Fourth Proportional to 7,144.25, 10,674.98 and 5,160.47

Step by Step Solution

1. Step 1: Write the proportion equation
   7,144.25 : 10,674.98 = 5,160.47 : x
2. Step 2: Convert to fraction form
   7,144.25/10,674.98 = 5,160.47/x
3. Step 3: Cross multiply
   7,144.25x = 10,674.98 × 5,160.47
4. Step 4: Simplify right side
   7,144.25x = 55,087,834.86
5. Step 5: Solve for x
   x = 55,087,834.86/7,144.25
6. Step 6: Final answer
   x = 7,710.80