Finding the Fourth Proportional to 12,801.30, 17,667.22 and 7,136.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.30 : 17,667.22 = 7,136.56 : x
2. Step 2: Convert to fraction form
   12,801.30/17,667.22 = 7,136.56/x
3. Step 3: Cross multiply
   12,801.30x = 17,667.22 × 7,136.56
4. Step 4: Simplify right side
   12,801.30x = 126,083,175.56
5. Step 5: Solve for x
   x = 126,083,175.56/12,801.30
6. Step 6: Final answer
   x = 9,849.25