Finding the Fourth Proportional to 9,390.27, 12,958.59 and 5,198.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,390.27 : 12,958.59 = 5,198.52 : x
2. Step 2: Convert to fraction form
   9,390.27/12,958.59 = 5,198.52/x
3. Step 3: Cross multiply
   9,390.27x = 12,958.59 × 5,198.52
4. Step 4: Simplify right side
   9,390.27x = 67,365,489.29
5. Step 5: Solve for x
   x = 67,365,489.29/9,390.27
6. Step 6: Final answer
   x = 7,173.97