Finding the Fourth Proportional to 5,707.55, 7,875.63 and 3,189.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,707.55 : 7,875.63 = 3,189.34 : x
2. Step 2: Convert to fraction form
   5,707.55/7,875.63 = 3,189.34/x
3. Step 3: Cross multiply
   5,707.55x = 7,875.63 × 3,189.34
4. Step 4: Simplify right side
   5,707.55x = 25,118,061.78
5. Step 5: Solve for x
   x = 25,118,061.78/5,707.55
6. Step 6: Final answer
   x = 4,400.85