Finding the Fourth Proportional to 12,151.59, 16,781.22 and 8,384.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,151.59 : 16,781.22 = 8,384.49 : x
2. Step 2: Convert to fraction form
   12,151.59/16,781.22 = 8,384.49/x
3. Step 3: Cross multiply
   12,151.59x = 16,781.22 × 8,384.49
4. Step 4: Simplify right side
   12,151.59x = 140,701,971.28
5. Step 5: Solve for x
   x = 140,701,971.28/12,151.59
6. Step 6: Final answer
   x = 11,578.89