Finding the Fourth Proportional to 10,821.30, 16,232.55 and 3,030.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,821.30 : 16,232.55 = 3,030.72 : x
2. Step 2: Convert to fraction form
   10,821.30/16,232.55 = 3,030.72/x
3. Step 3: Cross multiply
   10,821.30x = 16,232.55 × 3,030.72
4. Step 4: Simplify right side
   10,821.30x = 49,196,313.94
5. Step 5: Solve for x
   x = 49,196,313.94/10,821.30
6. Step 6: Final answer
   x = 4,546.25