Finding the Fourth Proportional to 10,938.72, 16,409.16 and 3,148.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,938.72 : 16,409.16 = 3,148.68 : x
2. Step 2: Convert to fraction form
   10,938.72/16,409.16 = 3,148.68/x
3. Step 3: Cross multiply
   10,938.72x = 16,409.16 × 3,148.68
4. Step 4: Simplify right side
   10,938.72x = 51,667,193.91
5. Step 5: Solve for x
   x = 51,667,193.91/10,938.72
6. Step 6: Final answer
   x = 4,723.33