Finding the Fourth Proportional to 9,405.68, 12,975.37 and 5,628.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,405.68 : 12,975.37 = 5,628.09 : x
2. Step 2: Convert to fraction form
   9,405.68/12,975.37 = 5,628.09/x
3. Step 3: Cross multiply
   9,405.68x = 12,975.37 × 5,628.09
4. Step 4: Simplify right side
   9,405.68x = 73,026,561.65
5. Step 5: Solve for x
   x = 73,026,561.65/9,405.68
6. Step 6: Final answer
   x = 7,764.09