Finding the Fourth Proportional to 14,280.30, 21,415.59 and 4,918.73

Step by Step Solution

1. Step 1: Write the proportion equation
   14,280.30 : 21,415.59 = 4,918.73 : x
2. Step 2: Convert to fraction form
   14,280.30/21,415.59 = 4,918.73/x
3. Step 3: Cross multiply
   14,280.30x = 21,415.59 × 4,918.73
4. Step 4: Simplify right side
   14,280.30x = 105,337,397.92
5. Step 5: Solve for x
   x = 105,337,397.92/14,280.30
6. Step 6: Final answer
   x = 7,376.41