Finding the Fourth Proportional to 9,645.39, 13,313.07 and 5,456.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,645.39 : 13,313.07 = 5,456.07 : x
2. Step 2: Convert to fraction form
   9,645.39/13,313.07 = 5,456.07/x
3. Step 3: Cross multiply
   9,645.39x = 13,313.07 × 5,456.07
4. Step 4: Simplify right side
   9,645.39x = 72,637,041.83
5. Step 5: Solve for x
   x = 72,637,041.83/9,645.39
6. Step 6: Final answer
   x = 7,530.75