Finding the Fourth Proportional to 10,947.10, 16,420.90 and 3,927.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,947.10 : 16,420.90 = 3,927.58 : x
2. Step 2: Convert to fraction form
   10,947.10/16,420.90 = 3,927.58/x
3. Step 3: Cross multiply
   10,947.10x = 16,420.90 × 3,927.58
4. Step 4: Simplify right side
   10,947.10x = 64,494,398.42
5. Step 5: Solve for x
   x = 64,494,398.42/10,947.10
6. Step 6: Final answer
   x = 5,891.46