Finding the Fourth Proportional to 48,669.72, 73,016.74 and 13,609.10

Step by Step Solution

1. Step 1: Write the proportion equation
   48,669.72 : 73,016.74 = 13,609.10 : x
2. Step 2: Convert to fraction form
   48,669.72/73,016.74 = 13,609.10/x
3. Step 3: Cross multiply
   48,669.72x = 73,016.74 × 13,609.10
4. Step 4: Simplify right side
   48,669.72x = 993,692,116.33
5. Step 5: Solve for x
   x = 993,692,116.33/48,669.72
6. Step 6: Final answer
   x = 20,417.05