Finding the Fourth Proportional to 21,986.88, 30,341.16 and 12,554.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,986.88 : 30,341.16 = 12,554.96 : x
2. Step 2: Convert to fraction form
   21,986.88/30,341.16 = 12,554.96/x
3. Step 3: Cross multiply
   21,986.88x = 30,341.16 × 12,554.96
4. Step 4: Simplify right side
   21,986.88x = 380,932,050.15
5. Step 5: Solve for x
   x = 380,932,050.15/21,986.88
6. Step 6: Final answer
   x = 17,325.43