Finding the Fourth Proportional to 13,774.24, 18,978.96 and 12,082.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,774.24 : 18,978.96 = 12,082.72 : x
2. Step 2: Convert to fraction form
   13,774.24/18,978.96 = 12,082.72/x
3. Step 3: Cross multiply
   13,774.24x = 18,978.96 × 12,082.72
4. Step 4: Simplify right side
   13,774.24x = 229,317,459.57
5. Step 5: Solve for x
   x = 229,317,459.57/13,774.24
6. Step 6: Final answer
   x = 16,648.28