Finding the Fourth Proportional to 5,404.87, 7,458.72 and 2,920.87

Step by Step Solution

1. Step 1: Write the proportion equation
   5,404.87 : 7,458.72 = 2,920.87 : x
2. Step 2: Convert to fraction form
   5,404.87/7,458.72 = 2,920.87/x
3. Step 3: Cross multiply
   5,404.87x = 7,458.72 × 2,920.87
4. Step 4: Simplify right side
   5,404.87x = 21,785,951.49
5. Step 5: Solve for x
   x = 21,785,951.49/5,404.87
6. Step 6: Final answer
   x = 4,030.80