Finding the Fourth Proportional to 5,158.41, 7,118.76 and 2,800.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,158.41 : 7,118.76 = 2,800.71 : x
2. Step 2: Convert to fraction form
   5,158.41/7,118.76 = 2,800.71/x
3. Step 3: Cross multiply
   5,158.41x = 7,118.76 × 2,800.71
4. Step 4: Simplify right side
   5,158.41x = 19,937,582.32
5. Step 5: Solve for x
   x = 19,937,582.32/5,158.41
6. Step 6: Final answer
   x = 3,865.06