Finding the Fourth Proportional to 7,131.37, 10,700.04 and 3,179.91

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.37 : 10,700.04 = 3,179.91 : x
2. Step 2: Convert to fraction form
   7,131.37/10,700.04 = 3,179.91/x
3. Step 3: Cross multiply
   7,131.37x = 10,700.04 × 3,179.91
4. Step 4: Simplify right side
   7,131.37x = 34,025,164.20
5. Step 5: Solve for x
   x = 34,025,164.20/7,131.37
6. Step 6: Final answer
   x = 4,771.20