Finding the Fourth Proportional to 8,786.17, 13,177.18 and 3,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,786.17 : 13,177.18 = 3,236.50 : x
2. Step 2: Convert to fraction form
   8,786.17/13,177.18 = 3,236.50/x
3. Step 3: Cross multiply
   8,786.17x = 13,177.18 × 3,236.50
4. Step 4: Simplify right side
   8,786.17x = 42,647,943.07
5. Step 5: Solve for x
   x = 42,647,943.07/8,786.17
6. Step 6: Final answer
   x = 4,853.99