Finding the Fourth Proportional to 10,859.38, 16,272.06 and 8,667.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,859.38 : 16,272.06 = 8,667.52 : x
2. Step 2: Convert to fraction form
   10,859.38/16,272.06 = 8,667.52/x
3. Step 3: Cross multiply
   10,859.38x = 16,272.06 × 8,667.52
4. Step 4: Simplify right side
   10,859.38x = 141,038,405.49
5. Step 5: Solve for x
   x = 141,038,405.49/10,859.38
6. Step 6: Final answer
   x = 12,987.70