Finding the Fourth Proportional to 12,576.82, 18,870.10 and 3,811.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,576.82 : 18,870.10 = 3,811.82 : x
2. Step 2: Convert to fraction form
   12,576.82/18,870.10 = 3,811.82/x
3. Step 3: Cross multiply
   12,576.82x = 18,870.10 × 3,811.82
4. Step 4: Simplify right side
   12,576.82x = 71,929,424.58
5. Step 5: Solve for x
   x = 71,929,424.58/12,576.82
6. Step 6: Final answer
   x = 5,719.21