Finding the Fourth Proportional to 12,959.85, 17,868.24 and 8,476.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.85 : 17,868.24 = 8,476.50 : x
2. Step 2: Convert to fraction form
   12,959.85/17,868.24 = 8,476.50/x
3. Step 3: Cross multiply
   12,959.85x = 17,868.24 × 8,476.50
4. Step 4: Simplify right side
   12,959.85x = 151,460,069.35
5. Step 5: Solve for x
   x = 151,460,069.35/12,959.85
6. Step 6: Final answer
   x = 11,686.87