Finding the Fourth Proportional to 8,569.60, 12,849.21 and 5,604.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,569.60 : 12,849.21 = 5,604.47 : x
2. Step 2: Convert to fraction form
   8,569.60/12,849.21 = 5,604.47/x
3. Step 3: Cross multiply
   8,569.60x = 12,849.21 × 5,604.47
4. Step 4: Simplify right side
   8,569.60x = 72,012,947.72
5. Step 5: Solve for x
   x = 72,012,947.72/8,569.60
6. Step 6: Final answer
   x = 8,403.30