Finding the Fourth Proportional to 5,389.45, 8,077.31 and 2,424.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,389.45 : 8,077.31 = 2,424.72 : x
2. Step 2: Convert to fraction form
   5,389.45/8,077.31 = 2,424.72/x
3. Step 3: Cross multiply
   5,389.45x = 8,077.31 × 2,424.72
4. Step 4: Simplify right side
   5,389.45x = 19,585,200.97
5. Step 5: Solve for x
   x = 19,585,200.97/5,389.45
6. Step 6: Final answer
   x = 3,633.99