Finding the Fourth Proportional to 14,969.82, 20,656.71 and 8,680.98

Step by Step Solution

1. Step 1: Write the proportion equation
   14,969.82 : 20,656.71 = 8,680.98 : x
2. Step 2: Convert to fraction form
   14,969.82/20,656.71 = 8,680.98/x
3. Step 3: Cross multiply
   14,969.82x = 20,656.71 × 8,680.98
4. Step 4: Simplify right side
   14,969.82x = 179,320,486.38
5. Step 5: Solve for x
   x = 179,320,486.38/14,969.82
6. Step 6: Final answer
   x = 11,978.80