Finding the Fourth Proportional to 7,355.18, 10,149.72 and 3,997.97

Step by Step Solution

1. Step 1: Write the proportion equation
   7,355.18 : 10,149.72 = 3,997.97 : x
2. Step 2: Convert to fraction form
   7,355.18/10,149.72 = 3,997.97/x
3. Step 3: Cross multiply
   7,355.18x = 10,149.72 × 3,997.97
4. Step 4: Simplify right side
   7,355.18x = 40,578,225.32
5. Step 5: Solve for x
   x = 40,578,225.32/7,355.18
6. Step 6: Final answer
   x = 5,516.96