Finding the Fourth Proportional to 10,919.55, 16,376.90 and 5,297.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,919.55 : 16,376.90 = 5,297.04 : x
2. Step 2: Convert to fraction form
   10,919.55/16,376.90 = 5,297.04/x
3. Step 3: Cross multiply
   10,919.55x = 16,376.90 × 5,297.04
4. Step 4: Simplify right side
   10,919.55x = 86,749,067.89
5. Step 5: Solve for x
   x = 86,749,067.89/10,919.55
6. Step 6: Final answer
   x = 7,944.38