Finding the Fourth Proportional to 9,501.21, 13,111.61 and 5,309.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,501.21 : 13,111.61 = 5,309.46 : x
2. Step 2: Convert to fraction form
   9,501.21/13,111.61 = 5,309.46/x
3. Step 3: Cross multiply
   9,501.21x = 13,111.61 × 5,309.46
4. Step 4: Simplify right side
   9,501.21x = 69,615,542.28
5. Step 5: Solve for x
   x = 69,615,542.28/9,501.21
6. Step 6: Final answer
   x = 7,327.02