Finding the Fourth Proportional to 10,203.97, 15,314.15 and 5,275.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,203.97 : 15,314.15 = 5,275.05 : x
2. Step 2: Convert to fraction form
   10,203.97/15,314.15 = 5,275.05/x
3. Step 3: Cross multiply
   10,203.97x = 15,314.15 × 5,275.05
4. Step 4: Simplify right side
   10,203.97x = 80,782,920.15
5. Step 5: Solve for x
   x = 80,782,920.15/10,203.97
6. Step 6: Final answer
   x = 7,916.81