Finding the Fourth Proportional to 12,235.83, 18,352.81 and 3,916.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,235.83 : 18,352.81 = 3,916.72 : x
2. Step 2: Convert to fraction form
   12,235.83/18,352.81 = 3,916.72/x
3. Step 3: Cross multiply
   12,235.83x = 18,352.81 × 3,916.72
4. Step 4: Simplify right side
   12,235.83x = 71,882,817.98
5. Step 5: Solve for x
   x = 71,882,817.98/12,235.83
6. Step 6: Final answer
   x = 5,874.78