Finding the Fourth Proportional to 6,980.72, 9,633.69 and 3,997.49

Step by Step Solution

1. Step 1: Write the proportion equation
   6,980.72 : 9,633.69 = 3,997.49 : x
2. Step 2: Convert to fraction form
   6,980.72/9,633.69 = 3,997.49/x
3. Step 3: Cross multiply
   6,980.72x = 9,633.69 × 3,997.49
4. Step 4: Simplify right side
   6,980.72x = 38,510,531.27
5. Step 5: Solve for x
   x = 38,510,531.27/6,980.72
6. Step 6: Final answer
   x = 5,516.70