Finding the Fourth Proportional to 3,992.32, 5,510.82 and 2,420.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,992.32 : 5,510.82 = 2,420.56 : x
2. Step 2: Convert to fraction form
   3,992.32/5,510.82 = 2,420.56/x
3. Step 3: Cross multiply
   3,992.32x = 5,510.82 × 2,420.56
4. Step 4: Simplify right side
   3,992.32x = 13,339,270.46
5. Step 5: Solve for x
   x = 13,339,270.46/3,992.32
6. Step 6: Final answer
   x = 3,341.23