Finding the Fourth Proportional to 13,717.68, 18,930.12 and 7,667.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,717.68 : 18,930.12 = 7,667.89 : x
2. Step 2: Convert to fraction form
   13,717.68/18,930.12 = 7,667.89/x
3. Step 3: Cross multiply
   13,717.68x = 18,930.12 × 7,667.89
4. Step 4: Simplify right side
   13,717.68x = 145,154,030.52
5. Step 5: Solve for x
   x = 145,154,030.52/13,717.68
6. Step 6: Final answer
   x = 10,581.53