Finding the Fourth Proportional to 10,611.50, 15,919.55 and 3,216.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,611.50 : 15,919.55 = 3,216.52 : x
2. Step 2: Convert to fraction form
   10,611.50/15,919.55 = 3,216.52/x
3. Step 3: Cross multiply
   10,611.50x = 15,919.55 × 3,216.52
4. Step 4: Simplify right side
   10,611.50x = 51,205,554.78
5. Step 5: Solve for x
   x = 51,205,554.78/10,611.50
6. Step 6: Final answer
   x = 4,825.48