Finding the Fourth Proportional to 5,200.16, 7,176.12 and 2,842.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,200.16 : 7,176.12 = 2,842.22 : x
2. Step 2: Convert to fraction form
   5,200.16/7,176.12 = 2,842.22/x
3. Step 3: Cross multiply
   5,200.16x = 7,176.12 × 2,842.22
4. Step 4: Simplify right side
   5,200.16x = 20,396,111.79
5. Step 5: Solve for x
   x = 20,396,111.79/5,200.16
6. Step 6: Final answer
   x = 3,922.21