Finding the Fourth Proportional to 12,917.50, 19,379.50 and 3,683.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,917.50 : 19,379.50 = 3,683.50 : x
2. Step 2: Convert to fraction form
   12,917.50/19,379.50 = 3,683.50/x
3. Step 3: Cross multiply
   12,917.50x = 19,379.50 × 3,683.50
4. Step 4: Simplify right side
   12,917.50x = 71,384,388.25
5. Step 5: Solve for x
   x = 71,384,388.25/12,917.50
6. Step 6: Final answer
   x = 5,526.18