Finding the Fourth Proportional to 13,581.82, 20,373.34 and 3,722.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,581.82 : 20,373.34 = 3,722.10 : x
2. Step 2: Convert to fraction form
   13,581.82/20,373.34 = 3,722.10/x
3. Step 3: Cross multiply
   13,581.82x = 20,373.34 × 3,722.10
4. Step 4: Simplify right side
   13,581.82x = 75,831,608.81
5. Step 5: Solve for x
   x = 75,831,608.81/13,581.82
6. Step 6: Final answer
   x = 5,583.32