Finding the Fourth Proportional to 14,280.24, 19,716.12 and 8,700.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,280.24 : 19,716.12 = 8,700.72 : x
2. Step 2: Convert to fraction form
   14,280.24/19,716.12 = 8,700.72/x
3. Step 3: Cross multiply
   14,280.24x = 19,716.12 × 8,700.72
4. Step 4: Simplify right side
   14,280.24x = 171,544,439.61
5. Step 5: Solve for x
   x = 171,544,439.61/14,280.24
6. Step 6: Final answer
   x = 12,012.71