Finding the Fourth Proportional to 19,939.56, 29,870.30 and 14,665

Step by Step Solution

1. Step 1: Write the proportion equation
   19,939.56 : 29,870.30 = 14,665 : x
2. Step 2: Convert to fraction form
   19,939.56/29,870.30 = 14,665/x
3. Step 3: Cross multiply
   19,939.56x = 29,870.30 × 14,665
4. Step 4: Simplify right side
   19,939.56x = 438,047,949.50
5. Step 5: Solve for x
   x = 438,047,949.50/19,939.56
6. Step 6: Final answer
   x = 21,968.79