Finding the Fourth Proportional to 9,569.96, 13,212.99 and 8,558.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,569.96 : 13,212.99 = 8,558.53 : x
2. Step 2: Convert to fraction form
   9,569.96/13,212.99 = 8,558.53/x
3. Step 3: Cross multiply
   9,569.96x = 13,212.99 × 8,558.53
4. Step 4: Simplify right side
   9,569.96x = 113,083,738.27
5. Step 5: Solve for x
   x = 113,083,738.27/9,569.96
6. Step 6: Final answer
   x = 11,816.53