Finding the Fourth Proportional to 13,081.73, 19,622.43 and 3,221.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.73 : 19,622.43 = 3,221.10 : x
2. Step 2: Convert to fraction form
   13,081.73/19,622.43 = 3,221.10/x
3. Step 3: Cross multiply
   13,081.73x = 19,622.43 × 3,221.10
4. Step 4: Simplify right side
   13,081.73x = 63,205,809.27
5. Step 5: Solve for x
   x = 63,205,809.27/13,081.73
6. Step 6: Final answer
   x = 4,831.61