Finding the Fourth Proportional to 10,078.93, 15,106.10 and 5,687.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078.93 : 15,106.10 = 5,687.31 : x
2. Step 2: Convert to fraction form
   10,078.93/15,106.10 = 5,687.31/x
3. Step 3: Cross multiply
   10,078.93x = 15,106.10 × 5,687.31
4. Step 4: Simplify right side
   10,078.93x = 85,913,101.80
5. Step 5: Solve for x
   x = 85,913,101.80/10,078.93
6. Step 6: Final answer
   x = 8,524.03