Finding the Fourth Proportional to 10,942.62, 16,406.64 and 5,391.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,942.62 : 16,406.64 = 5,391.30 : x
2. Step 2: Convert to fraction form
   10,942.62/16,406.64 = 5,391.30/x
3. Step 3: Cross multiply
   10,942.62x = 16,406.64 × 5,391.30
4. Step 4: Simplify right side
   10,942.62x = 88,453,118.23
5. Step 5: Solve for x
   x = 88,453,118.23/10,942.62
6. Step 6: Final answer
   x = 8,083.36