Finding the Fourth Proportional to 7,970.69, 10,995.39 and 5,137.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,970.69 : 10,995.39 = 5,137.31 : x
2. Step 2: Convert to fraction form
   7,970.69/10,995.39 = 5,137.31/x
3. Step 3: Cross multiply
   7,970.69x = 10,995.39 × 5,137.31
4. Step 4: Simplify right side
   7,970.69x = 56,486,672.02
5. Step 5: Solve for x
   x = 56,486,672.02/7,970.69
6. Step 6: Final answer
   x = 7,086.80