Finding the Fourth Proportional to 3,967.12, 5,472.06 and 3,126.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.12 : 5,472.06 = 3,126.52 : x
2. Step 2: Convert to fraction form
   3,967.12/5,472.06 = 3,126.52/x
3. Step 3: Cross multiply
   3,967.12x = 5,472.06 × 3,126.52
4. Step 4: Simplify right side
   3,967.12x = 17,108,505.03
5. Step 5: Solve for x
   x = 17,108,505.03/3,967.12
6. Step 6: Final answer
   x = 4,312.58