Finding the Fourth Proportional to 19,783.24, 29,689.89 and 7,315.06

Step by Step Solution

1. Step 1: Write the proportion equation
   19,783.24 : 29,689.89 = 7,315.06 : x
2. Step 2: Convert to fraction form
   19,783.24/29,689.89 = 7,315.06/x
3. Step 3: Cross multiply
   19,783.24x = 29,689.89 × 7,315.06
4. Step 4: Simplify right side
   19,783.24x = 217,183,321.90
5. Step 5: Solve for x
   x = 217,183,321.90/19,783.24
6. Step 6: Final answer
   x = 10,978.15