Finding the Fourth Proportional to 9,291.59, 12,821.92 and 5,514.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,291.59 : 12,821.92 = 5,514.91 : x
2. Step 2: Convert to fraction form
   9,291.59/12,821.92 = 5,514.91/x
3. Step 3: Cross multiply
   9,291.59x = 12,821.92 × 5,514.91
4. Step 4: Simplify right side
   9,291.59x = 70,711,734.83
5. Step 5: Solve for x
   x = 70,711,734.83/9,291.59
6. Step 6: Final answer
   x = 7,610.29