Finding the Fourth Proportional to 7,990.12, 10,999.74 and 5,997.34

Step by Step Solution

1. Step 1: Write the proportion equation
   7,990.12 : 10,999.74 = 5,997.34 : x
2. Step 2: Convert to fraction form
   7,990.12/10,999.74 = 5,997.34/x
3. Step 3: Cross multiply
   7,990.12x = 10,999.74 × 5,997.34
4. Step 4: Simplify right side
   7,990.12x = 65,969,180.69
5. Step 5: Solve for x
   x = 65,969,180.69/7,990.12
6. Step 6: Final answer
   x = 8,256.34