Finding the Fourth Proportional to 9,562.86, 13,199.76 and 8,819.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,562.86 : 13,199.76 = 8,819.28 : x
2. Step 2: Convert to fraction form
   9,562.86/13,199.76 = 8,819.28/x
3. Step 3: Cross multiply
   9,562.86x = 13,199.76 × 8,819.28
4. Step 4: Simplify right side
   9,562.86x = 116,412,379.37
5. Step 5: Solve for x
   x = 116,412,379.37/9,562.86
6. Step 6: Final answer
   x = 12,173.39