Finding the Fourth Proportional to 9,291.27, 12,821.49 and 5,514.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,291.27 : 12,821.49 = 5,514.60 : x
2. Step 2: Convert to fraction form
   9,291.27/12,821.49 = 5,514.60/x
3. Step 3: Cross multiply
   9,291.27x = 12,821.49 × 5,514.60
4. Step 4: Simplify right side
   9,291.27x = 70,705,364.71
5. Step 5: Solve for x
   x = 70,705,364.71/9,291.27
6. Step 6: Final answer
   x = 7,609.87