Finding the Fourth Proportional to 5,210.15, 7,189.71 and 2,851.83

Step by Step Solution

1. Step 1: Write the proportion equation
   5,210.15 : 7,189.71 = 2,851.83 : x
2. Step 2: Convert to fraction form
   5,210.15/7,189.71 = 2,851.83/x
3. Step 3: Cross multiply
   5,210.15x = 7,189.71 × 2,851.83
4. Step 4: Simplify right side
   5,210.15x = 20,503,830.67
5. Step 5: Solve for x
   x = 20,503,830.67/5,210.15
6. Step 6: Final answer
   x = 3,935.37