Finding the Fourth Proportional to 21,792.52, 30,066.84 and 12,359.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,792.52 : 30,066.84 = 12,359.28 : x
2. Step 2: Convert to fraction form
   21,792.52/30,066.84 = 12,359.28/x
3. Step 3: Cross multiply
   21,792.52x = 30,066.84 × 12,359.28
4. Step 4: Simplify right side
   21,792.52x = 371,604,494.28
5. Step 5: Solve for x
   x = 371,604,494.28/21,792.52
6. Step 6: Final answer
   x = 17,051.93