Finding the Fourth Proportional to 10,994.38, 16,488.78 and 5,442.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,994.38 : 16,488.78 = 5,442.46 : x
2. Step 2: Convert to fraction form
   10,994.38/16,488.78 = 5,442.46/x
3. Step 3: Cross multiply
   10,994.38x = 16,488.78 × 5,442.46
4. Step 4: Simplify right side
   10,994.38x = 89,739,525.60
5. Step 5: Solve for x
   x = 89,739,525.60/10,994.38
6. Step 6: Final answer
   x = 8,162.31