Finding the Fourth Proportional to 9,501.50, 13,111.82 and 5,309.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,501.50 : 13,111.82 = 5,309.78 : x
2. Step 2: Convert to fraction form
   9,501.50/13,111.82 = 5,309.78/x
3. Step 3: Cross multiply
   9,501.50x = 13,111.82 × 5,309.78
4. Step 4: Simplify right side
   9,501.50x = 69,620,879.60
5. Step 5: Solve for x
   x = 69,620,879.60/9,501.50
6. Step 6: Final answer
   x = 7,327.36