Finding the Fourth Proportional to 38,618.82, 53,294.78 and 21,851.82

Step by Step Solution

1. Step 1: Write the proportion equation
   38,618.82 : 53,294.78 = 21,851.82 : x
2. Step 2: Convert to fraction form
   38,618.82/53,294.78 = 21,851.82/x
3. Step 3: Cross multiply
   38,618.82x = 53,294.78 × 21,851.82
4. Step 4: Simplify right side
   38,618.82x = 1,164,587,830.24
5. Step 5: Solve for x
   x = 1,164,587,830.24/38,618.82
6. Step 6: Final answer
   x = 30,155.97