Finding the Fourth Proportional to 9,501.23, 13,115.39 and 8,504.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,501.23 : 13,115.39 = 8,504.78 : x
2. Step 2: Convert to fraction form
   9,501.23/13,115.39 = 8,504.78/x
3. Step 3: Cross multiply
   9,501.23x = 13,115.39 × 8,504.78
4. Step 4: Simplify right side
   9,501.23x = 111,543,462.25
5. Step 5: Solve for x
   x = 111,543,462.25/9,501.23
6. Step 6: Final answer
   x = 11,739.90