Finding the Fourth Proportional to 27,960.69, 38,593.89 and 16,638.18

Step by Step Solution

1. Step 1: Write the proportion equation
   27,960.69 : 38,593.89 = 16,638.18 : x
2. Step 2: Convert to fraction form
   27,960.69/38,593.89 = 16,638.18/x
3. Step 3: Cross multiply
   27,960.69x = 38,593.89 × 16,638.18
4. Step 4: Simplify right side
   27,960.69x = 642,132,088.72
5. Step 5: Solve for x
   x = 642,132,088.72/27,960.69
6. Step 6: Final answer
   x = 22,965.53