Finding the Fourth Proportional to 13,683.12, 18,882.72 and 7,395.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,683.12 : 18,882.72 = 7,395.50 : x
2. Step 2: Convert to fraction form
   13,683.12/18,882.72 = 7,395.50/x
3. Step 3: Cross multiply
   13,683.12x = 18,882.72 × 7,395.50
4. Step 4: Simplify right side
   13,683.12x = 139,647,155.76
5. Step 5: Solve for x
   x = 139,647,155.76/13,683.12
6. Step 6: Final answer
   x = 10,205.80