Finding the Fourth Proportional to 7,115.12, 10,675.53 and 3,997.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,115.12 : 10,675.53 = 3,997.31 : x
2. Step 2: Convert to fraction form
   7,115.12/10,675.53 = 3,997.31/x
3. Step 3: Cross multiply
   7,115.12x = 10,675.53 × 3,997.31
4. Step 4: Simplify right side
   7,115.12x = 42,673,402.82
5. Step 5: Solve for x
   x = 42,673,402.82/7,115.12
6. Step 6: Final answer
   x = 5,997.57