Finding the Fourth Proportional to 5,574.15, 7,688.05 and 4,081.53

Step by Step Solution

1. Step 1: Write the proportion equation
   5,574.15 : 7,688.05 = 4,081.53 : x
2. Step 2: Convert to fraction form
   5,574.15/7,688.05 = 4,081.53/x
3. Step 3: Cross multiply
   5,574.15x = 7,688.05 × 4,081.53
4. Step 4: Simplify right side
   5,574.15x = 31,379,006.72
5. Step 5: Solve for x
   x = 31,379,006.72/5,574.15
6. Step 6: Final answer
   x = 5,629.38