Finding the Fourth Proportional to 12,938.81, 17,856.06 and 7,273.67

Step by Step Solution

1. Step 1: Write the proportion equation
   12,938.81 : 17,856.06 = 7,273.67 : x
2. Step 2: Convert to fraction form
   12,938.81/17,856.06 = 7,273.67/x
3. Step 3: Cross multiply
   12,938.81x = 17,856.06 × 7,273.67
4. Step 4: Simplify right side
   12,938.81x = 129,879,087.94
5. Step 5: Solve for x
   x = 129,879,087.94/12,938.81
6. Step 6: Final answer
   x = 10,037.95