Finding the Fourth Proportional to 12,624.55, 18,936.80 and 3,859.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,624.55 : 18,936.80 = 3,859.46 : x
2. Step 2: Convert to fraction form
   12,624.55/18,936.80 = 3,859.46/x
3. Step 3: Cross multiply
   12,624.55x = 18,936.80 × 3,859.46
4. Step 4: Simplify right side
   12,624.55x = 73,085,825.69
5. Step 5: Solve for x
   x = 73,085,825.69/12,624.55
6. Step 6: Final answer
   x = 5,789.18