Finding the Fourth Proportional to 9,098.10, 12,555.72 and 5,514.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,098.10 : 12,555.72 = 5,514.21 : x
2. Step 2: Convert to fraction form
   9,098.10/12,555.72 = 5,514.21/x
3. Step 3: Cross multiply
   9,098.10x = 12,555.72 × 5,514.21
4. Step 4: Simplify right side
   9,098.10x = 69,234,876.78
5. Step 5: Solve for x
   x = 69,234,876.78/9,098.10
6. Step 6: Final answer
   x = 7,609.82