Finding the Fourth Proportional to 5,208.34, 7,185.23 and 3,111.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,208.34 : 7,185.23 = 3,111.25 : x
2. Step 2: Convert to fraction form
   5,208.34/7,185.23 = 3,111.25/x
3. Step 3: Cross multiply
   5,208.34x = 7,185.23 × 3,111.25
4. Step 4: Simplify right side
   5,208.34x = 22,355,031.28
5. Step 5: Solve for x
   x = 22,355,031.28/5,208.34
6. Step 6: Final answer
   x = 4,292.16