Finding the Fourth Proportional to 5,187.60, 7,158.15 and 2,949.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,187.60 : 7,158.15 = 2,949.57 : x
2. Step 2: Convert to fraction form
   5,187.60/7,158.15 = 2,949.57/x
3. Step 3: Cross multiply
   5,187.60x = 7,158.15 × 2,949.57
4. Step 4: Simplify right side
   5,187.60x = 21,113,464.50
5. Step 5: Solve for x
   x = 21,113,464.50/5,187.60
6. Step 6: Final answer
   x = 4,069.99