Finding the Fourth Proportional to 12,576.94, 18,865.59 and 4,786.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,576.94 : 18,865.59 = 4,786.18 : x
2. Step 2: Convert to fraction form
   12,576.94/18,865.59 = 4,786.18/x
3. Step 3: Cross multiply
   12,576.94x = 18,865.59 × 4,786.18
4. Step 4: Simplify right side
   12,576.94x = 90,294,109.55
5. Step 5: Solve for x
   x = 90,294,109.55/12,576.94
6. Step 6: Final answer
   x = 7,179.34