Finding the Fourth Proportional to 10,890.82, 16,338.36 and 3,494.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,890.82 : 16,338.36 = 3,494.71 : x
2. Step 2: Convert to fraction form
   10,890.82/16,338.36 = 3,494.71/x
3. Step 3: Cross multiply
   10,890.82x = 16,338.36 × 3,494.71
4. Step 4: Simplify right side
   10,890.82x = 57,097,730.91
5. Step 5: Solve for x
   x = 57,097,730.91/10,890.82
6. Step 6: Final answer
   x = 5,242.74