Finding the Fourth Proportional to 21,802.24, 30,092.88 and 13,425.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,802.24 : 30,092.88 = 13,425.76 : x
2. Step 2: Convert to fraction form
   21,802.24/30,092.88 = 13,425.76/x
3. Step 3: Cross multiply
   21,802.24x = 30,092.88 × 13,425.76
4. Step 4: Simplify right side
   21,802.24x = 404,019,784.59
5. Step 5: Solve for x
   x = 404,019,784.59/21,802.24
6. Step 6: Final answer
   x = 18,531.11