Finding the Third Proportional to 4,013.30 and 8,637.89

Step by Step Solution

1. Step 1: Write the proportion equation
   4,013.30 : 8,637.89 = 8,637.89 : x
2. Step 2: Convert to fraction form
   4,013.30/8,637.89 = 8,637.89/x
3. Step 3: Cross multiply
   4,013.30x = 8,637.89 × 8,637.89
4. Step 4: Simplify right side
   4,013.30x = 74,613,154.45
5. Step 5: Solve for x
   x = 74,613,154.45/4,013.30
6. Step 6: Final answer
   x = 18,591.49