Finding the Fourth Proportional to 13,109.22, 19,662.30 and 3,874.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,109.22 : 19,662.30 = 3,874.50 : x
2. Step 2: Convert to fraction form
   13,109.22/19,662.30 = 3,874.50/x
3. Step 3: Cross multiply
   13,109.22x = 19,662.30 × 3,874.50
4. Step 4: Simplify right side
   13,109.22x = 76,181,581.35
5. Step 5: Solve for x
   x = 76,181,581.35/13,109.22
6. Step 6: Final answer
   x = 5,811.30