Finding the Fourth Proportional to 48,581.16, 72,871.83 and 13,520.82

Step by Step Solution

1. Step 1: Write the proportion equation
   48,581.16 : 72,871.83 = 13,520.82 : x
2. Step 2: Convert to fraction form
   48,581.16/72,871.83 = 13,520.82/x
3. Step 3: Cross multiply
   48,581.16x = 72,871.83 × 13,520.82
4. Step 4: Simplify right side
   48,581.16x = 985,286,896.50
5. Step 5: Solve for x
   x = 985,286,896.50/48,581.16
6. Step 6: Final answer
   x = 20,281.26