Finding the Fourth Proportional to 9,645.06, 13,309.56 and 5,395.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,645.06 : 13,309.56 = 5,395.39 : x
2. Step 2: Convert to fraction form
   9,645.06/13,309.56 = 5,395.39/x
3. Step 3: Cross multiply
   9,645.06x = 13,309.56 × 5,395.39
4. Step 4: Simplify right side
   9,645.06x = 71,810,266.93
5. Step 5: Solve for x
   x = 71,810,266.93/9,645.06
6. Step 6: Final answer
   x = 7,445.29