Finding the Fourth Proportional to 10,939.81, 16,406.27 and 3,542.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,939.81 : 16,406.27 = 3,542.56 : x
2. Step 2: Convert to fraction form
   10,939.81/16,406.27 = 3,542.56/x
3. Step 3: Cross multiply
   10,939.81x = 16,406.27 × 3,542.56
4. Step 4: Simplify right side
   10,939.81x = 58,120,096.11
5. Step 5: Solve for x
   x = 58,120,096.11/10,939.81
6. Step 6: Final answer
   x = 5,312.72