Finding the Fourth Proportional to 14,300.48, 21,450.06 and 3,912.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,300.48 : 21,450.06 = 3,912.20 : x
2. Step 2: Convert to fraction form
   14,300.48/21,450.06 = 3,912.20/x
3. Step 3: Cross multiply
   14,300.48x = 21,450.06 × 3,912.20
4. Step 4: Simplify right side
   14,300.48x = 83,916,924.73
5. Step 5: Solve for x
   x = 83,916,924.73/14,300.48
6. Step 6: Final answer
   x = 5,868.12