Finding the Fourth Proportional to 5,608.56, 8,416.86 and 3,763.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,608.56 : 8,416.86 = 3,763.20 : x
2. Step 2: Convert to fraction form
   5,608.56/8,416.86 = 3,763.20/x
3. Step 3: Cross multiply
   5,608.56x = 8,416.86 × 3,763.20
4. Step 4: Simplify right side
   5,608.56x = 31,674,327.55
5. Step 5: Solve for x
   x = 31,674,327.55/5,608.56
6. Step 6: Final answer
   x = 5,647.50