Finding the Fourth Proportional to 5,100.45, 7,038.90 and 2,863.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.45 : 7,038.90 = 2,863.05 : x
2. Step 2: Convert to fraction form
   5,100.45/7,038.90 = 2,863.05/x
3. Step 3: Cross multiply
   5,100.45x = 7,038.90 × 2,863.05
4. Step 4: Simplify right side
   5,100.45x = 20,152,722.65
5. Step 5: Solve for x
   x = 20,152,722.65/5,100.45
6. Step 6: Final answer
   x = 3,951.17