Finding the Fourth Proportional to 5,227.86, 7,214.54 and 2,870.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,227.86 : 7,214.54 = 2,870.22 : x
2. Step 2: Convert to fraction form
   5,227.86/7,214.54 = 2,870.22/x
3. Step 3: Cross multiply
   5,227.86x = 7,214.54 × 2,870.22
4. Step 4: Simplify right side
   5,227.86x = 20,707,317.00
5. Step 5: Solve for x
   x = 20,707,317.00/5,227.86
6. Step 6: Final answer
   x = 3,960.95