Finding the Fourth Proportional to 14,128.16, 21,192.78 and 4,768.34

Step by Step Solution

1. Step 1: Write the proportion equation
   14,128.16 : 21,192.78 = 4,768.34 : x
2. Step 2: Convert to fraction form
   14,128.16/21,192.78 = 4,768.34/x
3. Step 3: Cross multiply
   14,128.16x = 21,192.78 × 4,768.34
4. Step 4: Simplify right side
   14,128.16x = 101,054,380.59
5. Step 5: Solve for x
   x = 101,054,380.59/14,128.16
6. Step 6: Final answer
   x = 7,152.69