Finding the Fourth Proportional to 6,980.45, 10,391.52 and 6,943.49

Step by Step Solution

1. Step 1: Write the proportion equation
   6,980.45 : 10,391.52 = 6,943.49 : x
2. Step 2: Convert to fraction form
   6,980.45/10,391.52 = 6,943.49/x
3. Step 3: Cross multiply
   6,980.45x = 10,391.52 × 6,943.49
4. Step 4: Simplify right side
   6,980.45x = 72,153,380.49
5. Step 5: Solve for x
   x = 72,153,380.49/6,980.45
6. Step 6: Final answer
   x = 10,336.49