Finding the Fourth Proportional to 5,641.72, 8,475.67 and 3,539.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,641.72 : 8,475.67 = 3,539.80 : x
2. Step 2: Convert to fraction form
   5,641.72/8,475.67 = 3,539.80/x
3. Step 3: Cross multiply
   5,641.72x = 8,475.67 × 3,539.80
4. Step 4: Simplify right side
   5,641.72x = 30,002,191.69
5. Step 5: Solve for x
   x = 30,002,191.69/5,641.72
6. Step 6: Final answer
   x = 5,317.92