Finding the Fourth Proportional to 8,786.71, 12,125.69 and 4,807.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,786.71 : 12,125.69 = 4,807.81 : x
2. Step 2: Convert to fraction form
   8,786.71/12,125.69 = 4,807.81/x
3. Step 3: Cross multiply
   8,786.71x = 12,125.69 × 4,807.81
4. Step 4: Simplify right side
   8,786.71x = 58,298,013.64
5. Step 5: Solve for x
   x = 58,298,013.64/8,786.71
6. Step 6: Final answer
   x = 6,634.79