Finding the Fourth Proportional to 10,821.51, 16,202.37 and 5,545.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,821.51 : 16,202.37 = 5,545.16 : x
2. Step 2: Convert to fraction form
   10,821.51/16,202.37 = 5,545.16/x
3. Step 3: Cross multiply
   10,821.51x = 16,202.37 × 5,545.16
4. Step 4: Simplify right side
   10,821.51x = 89,844,734.03
5. Step 5: Solve for x
   x = 89,844,734.03/10,821.51
6. Step 6: Final answer
   x = 8,302.42