Finding the Fourth Proportional to 7,131.48, 10,697.18 and 3,970.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.48 : 10,697.18 = 3,970.86 : x
2. Step 2: Convert to fraction form
   7,131.48/10,697.18 = 3,970.86/x
3. Step 3: Cross multiply
   7,131.48x = 10,697.18 × 3,970.86
4. Step 4: Simplify right side
   7,131.48x = 42,476,966.54
5. Step 5: Solve for x
   x = 42,476,966.54/7,131.48
6. Step 6: Final answer
   x = 5,956.27