Finding the Fourth Proportional to 12,606.82, 18,906.87 and 7,659.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,606.82 : 18,906.87 = 7,659.34 : x
2. Step 2: Convert to fraction form
   12,606.82/18,906.87 = 7,659.34/x
3. Step 3: Cross multiply
   12,606.82x = 18,906.87 × 7,659.34
4. Step 4: Simplify right side
   12,606.82x = 144,814,145.67
5. Step 5: Solve for x
   x = 144,814,145.67/12,606.82
6. Step 6: Final answer
   x = 11,486.97