Finding the Fourth Proportional to 5,667.32, 7,821.62 and 3,429.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,667.32 : 7,821.62 = 3,429.28 : x
2. Step 2: Convert to fraction form
   5,667.32/7,821.62 = 3,429.28/x
3. Step 3: Cross multiply
   5,667.32x = 7,821.62 × 3,429.28
4. Step 4: Simplify right side
   5,667.32x = 26,822,525.03
5. Step 5: Solve for x
   x = 26,822,525.03/5,667.32
6. Step 6: Final answer
   x = 4,732.84