Finding the Fourth Proportional to 14,650.65, 21,978.71 and 4,790.48

Step by Step Solution

1. Step 1: Write the proportion equation
   14,650.65 : 21,978.71 = 4,790.48 : x
2. Step 2: Convert to fraction form
   14,650.65/21,978.71 = 4,790.48/x
3. Step 3: Cross multiply
   14,650.65x = 21,978.71 × 4,790.48
4. Step 4: Simplify right side
   14,650.65x = 105,288,436.83
5. Step 5: Solve for x
   x = 105,288,436.83/14,650.65
6. Step 6: Final answer
   x = 7,186.61