Finding the Fourth Proportional to 9,315.38, 13,973.43 and 2,389.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,315.38 : 13,973.43 = 2,389.88 : x
2. Step 2: Convert to fraction form
   9,315.38/13,973.43 = 2,389.88/x
3. Step 3: Cross multiply
   9,315.38x = 13,973.43 × 2,389.88
4. Step 4: Simplify right side
   9,315.38x = 33,394,820.89
5. Step 5: Solve for x
   x = 33,394,820.89/9,315.38
6. Step 6: Final answer
   x = 3,584.91