Finding the Fourth Proportional to 12,984.66, 17,910.48 and 8,196.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,984.66 : 17,910.48 = 8,196.14 : x
2. Step 2: Convert to fraction form
   12,984.66/17,910.48 = 8,196.14/x
3. Step 3: Cross multiply
   12,984.66x = 17,910.48 × 8,196.14
4. Step 4: Simplify right side
   12,984.66x = 146,796,801.55
5. Step 5: Solve for x
   x = 146,796,801.55/12,984.66
6. Step 6: Final answer
   x = 11,305.40