Finding the Fourth Proportional to 13,300.86, 19,951.66 and 3,305.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.86 : 19,951.66 = 3,305.20 : x
2. Step 2: Convert to fraction form
   13,300.86/19,951.66 = 3,305.20/x
3. Step 3: Cross multiply
   13,300.86x = 19,951.66 × 3,305.20
4. Step 4: Simplify right side
   13,300.86x = 65,944,255.76
5. Step 5: Solve for x
   x = 65,944,255.76/13,300.86
6. Step 6: Final answer
   x = 4,957.89