Finding the Fourth Proportional to 10,871.50, 15,002.68 and 5,903.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,871.50 : 15,002.68 = 5,903.50 : x
2. Step 2: Convert to fraction form
   10,871.50/15,002.68 = 5,903.50/x
3. Step 3: Cross multiply
   10,871.50x = 15,002.68 × 5,903.50
4. Step 4: Simplify right side
   10,871.50x = 88,568,321.38
5. Step 5: Solve for x
   x = 88,568,321.38/10,871.50
6. Step 6: Final answer
   x = 8,146.84