Finding the Fourth Proportional to 12,665.82, 17,468.85 and 11,817

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.82 : 17,468.85 = 11,817 : x
2. Step 2: Convert to fraction form
   12,665.82/17,468.85 = 11,817/x
3. Step 3: Cross multiply
   12,665.82x = 17,468.85 × 11,817
4. Step 4: Simplify right side
   12,665.82x = 206,429,400.45
5. Step 5: Solve for x
   x = 206,429,400.45/12,665.82
6. Step 6: Final answer
   x = 16,298.15