Finding the Fourth Proportional to 21,949.60, 30,316.56 and 17,488.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,949.60 : 30,316.56 = 17,488.48 : x
2. Step 2: Convert to fraction form
   21,949.60/30,316.56 = 17,488.48/x
3. Step 3: Cross multiply
   21,949.60x = 30,316.56 × 17,488.48
4. Step 4: Simplify right side
   21,949.60x = 530,190,553.23
5. Step 5: Solve for x
   x = 530,190,553.23/21,949.60
6. Step 6: Final answer
   x = 24,154.91