Finding the Fourth Proportional to 10,939.84, 16,410.48 and 3,148.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,939.84 : 16,410.48 = 3,148.72 : x
2. Step 2: Convert to fraction form
   10,939.84/16,410.48 = 3,148.72/x
3. Step 3: Cross multiply
   10,939.84x = 16,410.48 × 3,148.72
4. Step 4: Simplify right side
   10,939.84x = 51,672,006.59
5. Step 5: Solve for x
   x = 51,672,006.59/10,939.84
6. Step 6: Final answer
   x = 4,723.29