Finding the Fourth Proportional to 14,760.72, 20,378.25 and 13,919.94

Step by Step Solution

1. Step 1: Write the proportion equation
   14,760.72 : 20,378.25 = 13,919.94 : x
2. Step 2: Convert to fraction form
   14,760.72/20,378.25 = 13,919.94/x
3. Step 3: Cross multiply
   14,760.72x = 20,378.25 × 13,919.94
4. Step 4: Simplify right side
   14,760.72x = 283,664,017.31
5. Step 5: Solve for x
   x = 283,664,017.31/14,760.72
6. Step 6: Final answer
   x = 19,217.49