Finding the Fourth Proportional to 9,570.30, 13,213.46 and 8,558.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,570.30 : 13,213.46 = 8,558.86 : x
2. Step 2: Convert to fraction form
   9,570.30/13,213.46 = 8,558.86/x
3. Step 3: Cross multiply
   9,570.30x = 13,213.46 × 8,558.86
4. Step 4: Simplify right side
   9,570.30x = 113,092,078.43
5. Step 5: Solve for x
   x = 113,092,078.43/9,570.30
6. Step 6: Final answer
   x = 11,816.98