Finding the Fourth Proportional to 20,510.69, 30,775.68 and 8,667.14

Step by Step Solution

1. Step 1: Write the proportion equation
   20,510.69 : 30,775.68 = 8,667.14 : x
2. Step 2: Convert to fraction form
   20,510.69/30,775.68 = 8,667.14/x
3. Step 3: Cross multiply
   20,510.69x = 30,775.68 × 8,667.14
4. Step 4: Simplify right side
   20,510.69x = 266,736,973.28
5. Step 5: Solve for x
   x = 266,736,973.28/20,510.69
6. Step 6: Final answer
   x = 13,004.78