Finding the Fourth Proportional to 10,855.52, 16,271.88 and 5,015.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855.52 : 16,271.88 = 5,015.96 : x
2. Step 2: Convert to fraction form
   10,855.52/16,271.88 = 5,015.96/x
3. Step 3: Cross multiply
   10,855.52x = 16,271.88 × 5,015.96
4. Step 4: Simplify right side
   10,855.52x = 81,619,099.20
5. Step 5: Solve for x
   x = 81,619,099.20/10,855.52
6. Step 6: Final answer
   x = 7,518.67