Finding the Fourth Proportional to 10,912.85, 16,370.48 and 3,894.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,912.85 : 16,370.48 = 3,894.50 : x
2. Step 2: Convert to fraction form
   10,912.85/16,370.48 = 3,894.50/x
3. Step 3: Cross multiply
   10,912.85x = 16,370.48 × 3,894.50
4. Step 4: Simplify right side
   10,912.85x = 63,754,733.04
5. Step 5: Solve for x
   x = 63,754,733.04/10,912.85
6. Step 6: Final answer
   x = 5,842.17