Finding the Fourth Proportional to 12,072.69, 16,667.64 and 9,564.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,072.69 : 16,667.64 = 9,564.93 : x
2. Step 2: Convert to fraction form
   12,072.69/16,667.64 = 9,564.93/x
3. Step 3: Cross multiply
   12,072.69x = 16,667.64 × 9,564.93
4. Step 4: Simplify right side
   12,072.69x = 159,424,809.87
5. Step 5: Solve for x
   x = 159,424,809.87/12,072.69
6. Step 6: Final answer
   x = 13,205.41