Finding the Fourth Proportional to 43,498.38, 65,241.48 and 13,918.80

Step by Step Solution

1. Step 1: Write the proportion equation
   43,498.38 : 65,241.48 = 13,918.80 : x
2. Step 2: Convert to fraction form
   43,498.38/65,241.48 = 13,918.80/x
3. Step 3: Cross multiply
   43,498.38x = 65,241.48 × 13,918.80
4. Step 4: Simplify right side
   43,498.38x = 908,083,111.82
5. Step 5: Solve for x
   x = 908,083,111.82/43,498.38
6. Step 6: Final answer
   x = 20,876.25