Finding the Fourth Proportional to 10,315.49, 15,459.37 and 5,628.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,315.49 : 15,459.37 = 5,628.48 : x
2. Step 2: Convert to fraction form
   10,315.49/15,459.37 = 5,628.48/x
3. Step 3: Cross multiply
   10,315.49x = 15,459.37 × 5,628.48
4. Step 4: Simplify right side
   10,315.49x = 87,012,682.81
5. Step 5: Solve for x
   x = 87,012,682.81/10,315.49
6. Step 6: Final answer
   x = 8,435.15