Finding the Fourth Proportional to 8,573.58, 12,849.03 and 5,443.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,573.58 : 12,849.03 = 5,443.74 : x
2. Step 2: Convert to fraction form
   8,573.58/12,849.03 = 5,443.74/x
3. Step 3: Cross multiply
   8,573.58x = 12,849.03 × 5,443.74
4. Step 4: Simplify right side
   8,573.58x = 69,946,778.57
5. Step 5: Solve for x
   x = 69,946,778.57/8,573.58
6. Step 6: Final answer
   x = 8,158.41