Finding the Fourth Proportional to 10,855.50, 16,271.88 and 5,015.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855.50 : 16,271.88 = 5,015.94 : x
2. Step 2: Convert to fraction form
   10,855.50/16,271.88 = 5,015.94/x
3. Step 3: Cross multiply
   10,855.50x = 16,271.88 × 5,015.94
4. Step 4: Simplify right side
   10,855.50x = 81,618,773.77
5. Step 5: Solve for x
   x = 81,618,773.77/10,855.50
6. Step 6: Final answer
   x = 7,518.66