Finding the Fourth Proportional to 12,131.64, 16,741.82 and 6,680.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,131.64 : 16,741.82 = 6,680.88 : x
2. Step 2: Convert to fraction form
   12,131.64/16,741.82 = 6,680.88/x
3. Step 3: Cross multiply
   12,131.64x = 16,741.82 × 6,680.88
4. Step 4: Simplify right side
   12,131.64x = 111,850,107.10
5. Step 5: Solve for x
   x = 111,850,107.10/12,131.64
6. Step 6: Final answer
   x = 9,219.70