Finding the Fourth Proportional to 16,540.84, 22,826.28 and 8,987.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,540.84 : 22,826.28 = 8,987.12 : x
2. Step 2: Convert to fraction form
   16,540.84/22,826.28 = 8,987.12/x
3. Step 3: Cross multiply
   16,540.84x = 22,826.28 × 8,987.12
4. Step 4: Simplify right side
   16,540.84x = 205,142,517.51
5. Step 5: Solve for x
   x = 205,142,517.51/16,540.84
6. Step 6: Final answer
   x = 12,402.18