Finding the Fourth Proportional to 9,369.07, 12,928.92 and 5,120.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,369.07 : 12,928.92 = 5,120.03 : x
2. Step 2: Convert to fraction form
   9,369.07/12,928.92 = 5,120.03/x
3. Step 3: Cross multiply
   9,369.07x = 12,928.92 × 5,120.03
4. Step 4: Simplify right side
   9,369.07x = 66,196,458.27
5. Step 5: Solve for x
   x = 66,196,458.27/9,369.07
6. Step 6: Final answer
   x = 7,065.42