Finding the Fourth Proportional to 8,538.55, 12,804.73 and 3,608.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,538.55 : 12,804.73 = 3,608.57 : x
2. Step 2: Convert to fraction form
   8,538.55/12,804.73 = 3,608.57/x
3. Step 3: Cross multiply
   8,538.55x = 12,804.73 × 3,608.57
4. Step 4: Simplify right side
   8,538.55x = 46,206,762.81
5. Step 5: Solve for x
   x = 46,206,762.81/8,538.55
6. Step 6: Final answer
   x = 5,411.55