Finding the Fourth Proportional to 10,083.09, 15,111.50 and 5,148.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,083.09 : 15,111.50 = 5,148.57 : x
2. Step 2: Convert to fraction form
   10,083.09/15,111.50 = 5,148.57/x
3. Step 3: Cross multiply
   10,083.09x = 15,111.50 × 5,148.57
4. Step 4: Simplify right side
   10,083.09x = 77,802,589.81
5. Step 5: Solve for x
   x = 77,802,589.81/10,083.09
6. Step 6: Final answer
   x = 7,716.15