Finding the Fourth Proportional to 65,921.82, 98,871.98 and 18,540.15

Step by Step Solution

1. Step 1: Write the proportion equation
   65,921.82 : 98,871.98 = 18,540.15 : x
2. Step 2: Convert to fraction form
   65,921.82/98,871.98 = 18,540.15/x
3. Step 3: Cross multiply
   65,921.82x = 98,871.98 × 18,540.15
4. Step 4: Simplify right side
   65,921.82x = 1,833,101,247.30
5. Step 5: Solve for x
   x = 1,833,101,247.30/65,921.82
6. Step 6: Final answer
   x = 27,807.20