Finding the Fourth Proportional to 10,939.31, 16,405.52 and 3,542.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,939.31 : 16,405.52 = 3,542.06 : x
2. Step 2: Convert to fraction form
   10,939.31/16,405.52 = 3,542.06/x
3. Step 3: Cross multiply
   10,939.31x = 16,405.52 × 3,542.06
4. Step 4: Simplify right side
   10,939.31x = 58,109,236.43
5. Step 5: Solve for x
   x = 58,109,236.43/10,939.31
6. Step 6: Final answer
   x = 5,311.97