Finding the Fourth Proportional to 9,336.56, 12,885.94 and 5,559.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,336.56 : 12,885.94 = 5,559.90 : x
2. Step 2: Convert to fraction form
   9,336.56/12,885.94 = 5,559.90/x
3. Step 3: Cross multiply
   9,336.56x = 12,885.94 × 5,559.90
4. Step 4: Simplify right side
   9,336.56x = 71,644,537.81
5. Step 5: Solve for x
   x = 71,644,537.81/9,336.56
6. Step 6: Final answer
   x = 7,673.55