Finding the Fourth Proportional to 12,091.71, 16,688.34 and 7,378.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,091.71 : 16,688.34 = 7,378.73 : x
2. Step 2: Convert to fraction form
   12,091.71/16,688.34 = 7,378.73/x
3. Step 3: Cross multiply
   12,091.71x = 16,688.34 × 7,378.73
4. Step 4: Simplify right side
   12,091.71x = 123,138,755.01
5. Step 5: Solve for x
   x = 123,138,755.01/12,091.71
6. Step 6: Final answer
   x = 10,183.73