Finding the Fourth Proportional to 7,356.27, 10,151.72 and 3,999.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,356.27 : 10,151.72 = 3,999.09 : x
2. Step 2: Convert to fraction form
   7,356.27/10,151.72 = 3,999.09/x
3. Step 3: Cross multiply
   7,356.27x = 10,151.72 × 3,999.09
4. Step 4: Simplify right side
   7,356.27x = 40,597,621.94
5. Step 5: Solve for x
   x = 40,597,621.94/7,356.27
6. Step 6: Final answer
   x = 5,518.78