Finding the Fourth Proportional to 5,667.48, 7,820.64 and 3,571.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,667.48 : 7,820.64 = 3,571.20 : x
2. Step 2: Convert to fraction form
   5,667.48/7,820.64 = 3,571.20/x
3. Step 3: Cross multiply
   5,667.48x = 7,820.64 × 3,571.20
4. Step 4: Simplify right side
   5,667.48x = 27,929,069.57
5. Step 5: Solve for x
   x = 27,929,069.57/5,667.48
6. Step 6: Final answer
   x = 4,927.95