Finding the Fourth Proportional to 9,997.37, 15,005.15 and 5,321.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,997.37 : 15,005.15 = 5,321.31 : x
2. Step 2: Convert to fraction form
   9,997.37/15,005.15 = 5,321.31/x
3. Step 3: Cross multiply
   9,997.37x = 15,005.15 × 5,321.31
4. Step 4: Simplify right side
   9,997.37x = 79,847,054.75
5. Step 5: Solve for x
   x = 79,847,054.75/9,997.37
6. Step 6: Final answer
   x = 7,986.81