Finding the Fourth Proportional to 9,982.74, 14,978.46 and 5,360.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,982.74 : 14,978.46 = 5,360.34 : x
2. Step 2: Convert to fraction form
   9,982.74/14,978.46 = 5,360.34/x
3. Step 3: Cross multiply
   9,982.74x = 14,978.46 × 5,360.34
4. Step 4: Simplify right side
   9,982.74x = 80,289,638.28
5. Step 5: Solve for x
   x = 80,289,638.28/9,982.74
6. Step 6: Final answer
   x = 8,042.85