Finding the Fourth Proportional to 10,809.69, 16,215.54 and 3,018.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,809.69 : 16,215.54 = 3,018.57 : x
2. Step 2: Convert to fraction form
   10,809.69/16,215.54 = 3,018.57/x
3. Step 3: Cross multiply
   10,809.69x = 16,215.54 × 3,018.57
4. Step 4: Simplify right side
   10,809.69x = 48,947,742.58
5. Step 5: Solve for x
   x = 48,947,742.58/10,809.69
6. Step 6: Final answer
   x = 4,528.14