Finding the Fourth Proportional to 8,504.18, 12,748.59 and 3,574.21

Step by Step Solution

1. Step 1: Write the proportion equation
   8,504.18 : 12,748.59 = 3,574.21 : x
2. Step 2: Convert to fraction form
   8,504.18/12,748.59 = 3,574.21/x
3. Step 3: Cross multiply
   8,504.18x = 12,748.59 × 3,574.21
4. Step 4: Simplify right side
   8,504.18x = 45,566,091.70
5. Step 5: Solve for x
   x = 45,566,091.70/8,504.18
6. Step 6: Final answer
   x = 5,358.08