Finding the Fourth Proportional to 10,647.09, 15,958.29 and 5,028.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,647.09 : 15,958.29 = 5,028.30 : x
2. Step 2: Convert to fraction form
   10,647.09/15,958.29 = 5,028.30/x
3. Step 3: Cross multiply
   10,647.09x = 15,958.29 × 5,028.30
4. Step 4: Simplify right side
   10,647.09x = 80,243,069.61
5. Step 5: Solve for x
   x = 80,243,069.61/10,647.09
6. Step 6: Final answer
   x = 7,536.62