Finding the Fourth Proportional to 9,619.56, 13,245.38 and 8,200.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,619.56 : 13,245.38 = 8,200.06 : x
2. Step 2: Convert to fraction form
   9,619.56/13,245.38 = 8,200.06/x
3. Step 3: Cross multiply
   9,619.56x = 13,245.38 × 8,200.06
4. Step 4: Simplify right side
   9,619.56x = 108,612,869.72
5. Step 5: Solve for x
   x = 108,612,869.72/9,619.56
6. Step 6: Final answer
   x = 11,290.84