Finding the Fourth Proportional to 11,817.43, 16,308.69 and 6,781.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,817.43 : 16,308.69 = 6,781.61 : x
2. Step 2: Convert to fraction form
   11,817.43/16,308.69 = 6,781.61/x
3. Step 3: Cross multiply
   11,817.43x = 16,308.69 × 6,781.61
4. Step 4: Simplify right side
   11,817.43x = 110,599,136.94
5. Step 5: Solve for x
   x = 110,599,136.94/11,817.43
6. Step 6: Final answer
   x = 9,358.99