Finding the Fourth Proportional to 6,213.45, 8,574.79 and 3,561.37

Step by Step Solution

1. Step 1: Write the proportion equation
   6,213.45 : 8,574.79 = 3,561.37 : x
2. Step 2: Convert to fraction form
   6,213.45/8,574.79 = 3,561.37/x
3. Step 3: Cross multiply
   6,213.45x = 8,574.79 × 3,561.37
4. Step 4: Simplify right side
   6,213.45x = 30,537,956.99
5. Step 5: Solve for x
   x = 30,537,956.99/6,213.45
6. Step 6: Final answer
   x = 4,914.82