Finding the Fourth Proportional to 9,392.38, 12,961.57 and 5,200.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,392.38 : 12,961.57 = 5,200.72 : x
2. Step 2: Convert to fraction form
   9,392.38/12,961.57 = 5,200.72/x
3. Step 3: Cross multiply
   9,392.38x = 12,961.57 × 5,200.72
4. Step 4: Simplify right side
   9,392.38x = 67,409,431.52
5. Step 5: Solve for x
   x = 67,409,431.52/9,392.38
6. Step 6: Final answer
   x = 7,177.04