Finding the Fourth Proportional to 3,429.43, 5,131.18 and 3,222.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,429.43 : 5,131.18 = 3,222.07 : x
2. Step 2: Convert to fraction form
   3,429.43/5,131.18 = 3,222.07/x
3. Step 3: Cross multiply
   3,429.43x = 5,131.18 × 3,222.07
4. Step 4: Simplify right side
   3,429.43x = 16,533,021.14
5. Step 5: Solve for x
   x = 16,533,021.14/3,429.43
6. Step 6: Final answer
   x = 4,820.92