Finding the Fourth Proportional to 10,855.72, 16,283.86 and 2,958.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855.72 : 16,283.86 = 2,958.30 : x
2. Step 2: Convert to fraction form
   10,855.72/16,283.86 = 2,958.30/x
3. Step 3: Cross multiply
   10,855.72x = 16,283.86 × 2,958.30
4. Step 4: Simplify right side
   10,855.72x = 48,172,535.64
5. Step 5: Solve for x
   x = 48,172,535.64/10,855.72
6. Step 6: Final answer
   x = 4,437.53