Finding the Fourth Proportional to 9,643.76, 13,309.06 and 5,395.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,643.76 : 13,309.06 = 5,395.23 : x
2. Step 2: Convert to fraction form
   9,643.76/13,309.06 = 5,395.23/x
3. Step 3: Cross multiply
   9,643.76x = 13,309.06 × 5,395.23
4. Step 4: Simplify right side
   9,643.76x = 71,805,439.78
5. Step 5: Solve for x
   x = 71,805,439.78/9,643.76
6. Step 6: Final answer
   x = 7,445.79