Finding the Fourth Proportional to 12,959.77, 17,875.27 and 8,650.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.77 : 17,875.27 = 8,650.69 : x
2. Step 2: Convert to fraction form
   12,959.77/17,875.27 = 8,650.69/x
3. Step 3: Cross multiply
   12,959.77x = 17,875.27 × 8,650.69
4. Step 4: Simplify right side
   12,959.77x = 154,633,485.75
5. Step 5: Solve for x
   x = 154,633,485.75/12,959.77
6. Step 6: Final answer
   x = 11,931.81