Finding the Fourth Proportional to 9,369.68, 12,930.27 and 5,120.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,369.68 : 12,930.27 = 5,120.72 : x
2. Step 2: Convert to fraction form
   9,369.68/12,930.27 = 5,120.72/x
3. Step 3: Cross multiply
   9,369.68x = 12,930.27 × 5,120.72
4. Step 4: Simplify right side
   9,369.68x = 66,212,292.19
5. Step 5: Solve for x
   x = 66,212,292.19/9,369.68
6. Step 6: Final answer
   x = 7,066.65