Finding the Fourth Proportional to 13,870.08, 20,805.17 and 3,481.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,870.08 : 20,805.17 = 3,481.83 : x
2. Step 2: Convert to fraction form
   13,870.08/20,805.17 = 3,481.83/x
3. Step 3: Cross multiply
   13,870.08x = 20,805.17 × 3,481.83
4. Step 4: Simplify right side
   13,870.08x = 72,440,047.65
5. Step 5: Solve for x
   x = 72,440,047.65/13,870.08
6. Step 6: Final answer
   x = 5,222.76