Finding the Fourth Proportional to 10,517.31, 15,773.99 and 3,942.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,517.31 : 15,773.99 = 3,942.09 : x
2. Step 2: Convert to fraction form
   10,517.31/15,773.99 = 3,942.09/x
3. Step 3: Cross multiply
   10,517.31x = 15,773.99 × 3,942.09
4. Step 4: Simplify right side
   10,517.31x = 62,182,468.53
5. Step 5: Solve for x
   x = 62,182,468.53/10,517.31
6. Step 6: Final answer
   x = 5,912.39