Finding the Fourth Proportional to 48,641.09, 72,948.57 and 18,648.82

Step by Step Solution

1. Step 1: Write the proportion equation
   48,641.09 : 72,948.57 = 18,648.82 : x
2. Step 2: Convert to fraction form
   48,641.09/72,948.57 = 18,648.82/x
3. Step 3: Cross multiply
   48,641.09x = 72,948.57 × 18,648.82
4. Step 4: Simplify right side
   48,641.09x = 1,360,404,568.82
5. Step 5: Solve for x
   x = 1,360,404,568.82/48,641.09
6. Step 6: Final answer
   x = 27,968.22