Finding the Fourth Proportional to 12,092.88, 18,139.77 and 3,328.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,092.88 : 18,139.77 = 3,328.50 : x
2. Step 2: Convert to fraction form
   12,092.88/18,139.77 = 3,328.50/x
3. Step 3: Cross multiply
   12,092.88x = 18,139.77 × 3,328.50
4. Step 4: Simplify right side
   12,092.88x = 60,378,224.45
5. Step 5: Solve for x
   x = 60,378,224.45/12,092.88
6. Step 6: Final answer
   x = 4,992.87