Finding the Fourth Proportional to 10,821.01, 14,929.59 and 8,545.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,821.01 : 14,929.59 = 8,545.18 : x
2. Step 2: Convert to fraction form
   10,821.01/14,929.59 = 8,545.18/x
3. Step 3: Cross multiply
   10,821.01x = 14,929.59 × 8,545.18
4. Step 4: Simplify right side
   10,821.01x = 127,576,033.88
5. Step 5: Solve for x
   x = 127,576,033.88/10,821.01
6. Step 6: Final answer
   x = 11,789.66