Finding the Fourth Proportional to 8,523.30, 12,783.81 and 3,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,523.30 : 12,783.81 = 3,328.50 : x
2. Step 2: Convert to fraction form
   8,523.30/12,783.81 = 3,328.50/x
3. Step 3: Cross multiply
   8,523.30x = 12,783.81 × 3,328.50
4. Step 4: Simplify right side
   8,523.30x = 42,550,911.59
5. Step 5: Solve for x
   x = 42,550,911.59/8,523.30
6. Step 6: Final answer
   x = 4,992.30