Finding the Fourth Proportional to 13,023.84, 17,983.20 and 12,028.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,023.84 : 17,983.20 = 12,028.72 : x
2. Step 2: Convert to fraction form
   13,023.84/17,983.20 = 12,028.72/x
3. Step 3: Cross multiply
   13,023.84x = 17,983.20 × 12,028.72
4. Step 4: Simplify right side
   13,023.84x = 216,314,877.50
5. Step 5: Solve for x
   x = 216,314,877.50/13,023.84
6. Step 6: Final answer
   x = 16,609.15