Finding the Fourth Proportional to 15,040.26, 20,756.27 and 8,667.81

Step by Step Solution

1. Step 1: Write the proportion equation
   15,040.26 : 20,756.27 = 8,667.81 : x
2. Step 2: Convert to fraction form
   15,040.26/20,756.27 = 8,667.81/x
3. Step 3: Cross multiply
   15,040.26x = 20,756.27 × 8,667.81
4. Step 4: Simplify right side
   15,040.26x = 179,911,426.34
5. Step 5: Solve for x
   x = 179,911,426.34/15,040.26
6. Step 6: Final answer
   x = 11,961.99