Finding the Fourth Proportional to 10,385.31, 15,582.53 and 5,453.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.31 : 15,582.53 = 5,453.83 : x
2. Step 2: Convert to fraction form
   10,385.31/15,582.53 = 5,453.83/x
3. Step 3: Cross multiply
   10,385.31x = 15,582.53 × 5,453.83
4. Step 4: Simplify right side
   10,385.31x = 84,984,472.02
5. Step 5: Solve for x
   x = 84,984,472.02/10,385.31
6. Step 6: Final answer
   x = 8,183.14