Finding the Fourth Proportional to 10,986.23, 16,485.15 and 5,992.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,986.23 : 16,485.15 = 5,992.21 : x
2. Step 2: Convert to fraction form
   10,986.23/16,485.15 = 5,992.21/x
3. Step 3: Cross multiply
   10,986.23x = 16,485.15 × 5,992.21
4. Step 4: Simplify right side
   10,986.23x = 98,782,461.94
5. Step 5: Solve for x
   x = 98,782,461.94/10,986.23
6. Step 6: Final answer
   x = 8,991.48