Finding the Fourth Proportional to 13,081.83, 19,621.53 and 3,722.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.83 : 19,621.53 = 3,722.70 : x
2. Step 2: Convert to fraction form
   13,081.83/19,621.53 = 3,722.70/x
3. Step 3: Cross multiply
   13,081.83x = 19,621.53 × 3,722.70
4. Step 4: Simplify right side
   13,081.83x = 73,045,069.73
5. Step 5: Solve for x
   x = 73,045,069.73/13,081.83
6. Step 6: Final answer
   x = 5,583.70