Finding the Fourth Proportional to 9,391.27, 12,958.38 and 5,615.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,391.27 : 12,958.38 = 5,615.98 : x
2. Step 2: Convert to fraction form
   9,391.27/12,958.38 = 5,615.98/x
3. Step 3: Cross multiply
   9,391.27x = 12,958.38 × 5,615.98
4. Step 4: Simplify right side
   9,391.27x = 72,774,002.91
5. Step 5: Solve for x
   x = 72,774,002.91/9,391.27
6. Step 6: Final answer
   x = 7,749.11