Finding the Fourth Proportional to 9,519, 14,278.89 and 2,945.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,519 : 14,278.89 = 2,945.31 : x
2. Step 2: Convert to fraction form
   9,519/14,278.89 = 2,945.31/x
3. Step 3: Cross multiply
   9,519x = 14,278.89 × 2,945.31
4. Step 4: Simplify right side
   9,519x = 42,055,757.51
5. Step 5: Solve for x
   x = 42,055,757.51/9,519
6. Step 6: Final answer
   x = 4,418.09