Finding the Fourth Proportional to 48,012.22, 72,016.17 and 18,443.98

Step by Step Solution

1. Step 1: Write the proportion equation
   48,012.22 : 72,016.17 = 18,443.98 : x
2. Step 2: Convert to fraction form
   48,012.22/72,016.17 = 18,443.98/x
3. Step 3: Cross multiply
   48,012.22x = 72,016.17 × 18,443.98
4. Step 4: Simplify right side
   48,012.22x = 1,328,264,799.16
5. Step 5: Solve for x
   x = 1,328,264,799.16/48,012.22
6. Step 6: Final answer
   x = 27,665.14