Finding the Fourth Proportional to 12,706.86, 17,547 and 8,238.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,706.86 : 17,547 = 8,238.09 : x
2. Step 2: Convert to fraction form
   12,706.86/17,547 = 8,238.09/x
3. Step 3: Cross multiply
   12,706.86x = 17,547 × 8,238.09
4. Step 4: Simplify right side
   12,706.86x = 144,553,765.23
5. Step 5: Solve for x
   x = 144,553,765.23/12,706.86
6. Step 6: Final answer
   x = 11,376.04