Finding the Fourth Proportional to 13,636.03, 18,817.83 and 7,667.65

Step by Step Solution

1. Step 1: Write the proportion equation
   13,636.03 : 18,817.83 = 7,667.65 : x
2. Step 2: Convert to fraction form
   13,636.03/18,817.83 = 7,667.65/x
3. Step 3: Cross multiply
   13,636.03x = 18,817.83 × 7,667.65
4. Step 4: Simplify right side
   13,636.03x = 144,288,505.46
5. Step 5: Solve for x
   x = 144,288,505.46/13,636.03
6. Step 6: Final answer
   x = 10,581.42