Finding the Fourth Proportional to 5,436.85, 7,502.61 and 3,078.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,436.85 : 7,502.61 = 3,078.94 : x
2. Step 2: Convert to fraction form
   5,436.85/7,502.61 = 3,078.94/x
3. Step 3: Cross multiply
   5,436.85x = 7,502.61 × 3,078.94
4. Step 4: Simplify right side
   5,436.85x = 23,100,086.03
5. Step 5: Solve for x
   x = 23,100,086.03/5,436.85
6. Step 6: Final answer
   x = 4,248.80