Finding the Fourth Proportional to 10,987.74, 16,483.41 and 5,441.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.74 : 16,483.41 = 5,441.31 : x
2. Step 2: Convert to fraction form
   10,987.74/16,483.41 = 5,441.31/x
3. Step 3: Cross multiply
   10,987.74x = 16,483.41 × 5,441.31
4. Step 4: Simplify right side
   10,987.74x = 89,691,343.67
5. Step 5: Solve for x
   x = 89,691,343.67/10,987.74
6. Step 6: Final answer
   x = 8,162.86