Finding the Fourth Proportional to 9,405.69, 12,979.83 and 5,629.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,405.69 : 12,979.83 = 5,629.02 : x
2. Step 2: Convert to fraction form
   9,405.69/12,979.83 = 5,629.02/x
3. Step 3: Cross multiply
   9,405.69x = 12,979.83 × 5,629.02
4. Step 4: Simplify right side
   9,405.69x = 73,063,722.67
5. Step 5: Solve for x
   x = 73,063,722.67/9,405.69
6. Step 6: Final answer
   x = 7,768.03