Finding the Fourth Proportional to 8,432.81, 12,649.83 and 3,238.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,432.81 : 12,649.83 = 3,238.69 : x
2. Step 2: Convert to fraction form
   8,432.81/12,649.83 = 3,238.69/x
3. Step 3: Cross multiply
   8,432.81x = 12,649.83 × 3,238.69
4. Step 4: Simplify right side
   8,432.81x = 40,968,834.15
5. Step 5: Solve for x
   x = 40,968,834.15/8,432.81
6. Step 6: Final answer
   x = 4,858.26