Finding the Fourth Proportional to 21,980.88, 30,333.18 and 12,549.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,980.88 : 30,333.18 = 12,549.24 : x
2. Step 2: Convert to fraction form
   21,980.88/30,333.18 = 12,549.24/x
3. Step 3: Cross multiply
   21,980.88x = 30,333.18 × 12,549.24
4. Step 4: Simplify right side
   21,980.88x = 380,658,355.78
5. Step 5: Solve for x
   x = 380,658,355.78/21,980.88
6. Step 6: Final answer
   x = 17,317.70