Finding the Fourth Proportional to 11,111.92, 16,670.59 and 3,320.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,111.92 : 16,670.59 = 3,320.73 : x
2. Step 2: Convert to fraction form
   11,111.92/16,670.59 = 3,320.73/x
3. Step 3: Cross multiply
   11,111.92x = 16,670.59 × 3,320.73
4. Step 4: Simplify right side
   11,111.92x = 55,358,520.03
5. Step 5: Solve for x
   x = 55,358,520.03/11,111.92
6. Step 6: Final answer
   x = 4,981.91