Finding the Fourth Proportional to 38,859.06, 53,623.82 and 21,863

Step by Step Solution

1. Step 1: Write the proportion equation
   38,859.06 : 53,623.82 = 21,863 : x
2. Step 2: Convert to fraction form
   38,859.06/53,623.82 = 21,863/x
3. Step 3: Cross multiply
   38,859.06x = 53,623.82 × 21,863
4. Step 4: Simplify right side
   38,859.06x = 1,172,377,576.66
5. Step 5: Solve for x
   x = 1,172,377,576.66/38,859.06
6. Step 6: Final answer
   x = 30,169.99