Finding the Fourth Proportional to 10,830.50, 16,245.78 and 2,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,830.50 : 16,245.78 = 2,622.50 : x
2. Step 2: Convert to fraction form
   10,830.50/16,245.78 = 2,622.50/x
3. Step 3: Cross multiply
   10,830.50x = 16,245.78 × 2,622.50
4. Step 4: Simplify right side
   10,830.50x = 42,604,558.05
5. Step 5: Solve for x
   x = 42,604,558.05/10,830.50
6. Step 6: Final answer
   x = 3,933.76