Finding the Fourth Proportional to 3,424.96, 5,139.76 and 2,127.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,424.96 : 5,139.76 = 2,127.12 : x
2. Step 2: Convert to fraction form
   3,424.96/5,139.76 = 2,127.12/x
3. Step 3: Cross multiply
   3,424.96x = 5,139.76 × 2,127.12
4. Step 4: Simplify right side
   3,424.96x = 10,932,886.29
5. Step 5: Solve for x
   x = 10,932,886.29/3,424.96
6. Step 6: Final answer
   x = 3,192.12