Finding the Fourth Proportional to 10,927.98, 16,387.95 and 3,906.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,927.98 : 16,387.95 = 3,906.09 : x
2. Step 2: Convert to fraction form
   10,927.98/16,387.95 = 3,906.09/x
3. Step 3: Cross multiply
   10,927.98x = 16,387.95 × 3,906.09
4. Step 4: Simplify right side
   10,927.98x = 64,012,807.62
5. Step 5: Solve for x
   x = 64,012,807.62/10,927.98
6. Step 6: Final answer
   x = 5,857.70