Finding the Fourth Proportional to 10,821.30, 16,230.73 and 3,030.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,821.30 : 16,230.73 = 3,030.72 : x
2. Step 2: Convert to fraction form
   10,821.30/16,230.73 = 3,030.72/x
3. Step 3: Cross multiply
   10,821.30x = 16,230.73 × 3,030.72
4. Step 4: Simplify right side
   10,821.30x = 49,190,798.03
5. Step 5: Solve for x
   x = 49,190,798.03/10,821.30
6. Step 6: Final answer
   x = 4,545.74