Finding the Fourth Proportional to 10,979.70, 16,434.18 and 7,234.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,979.70 : 16,434.18 = 7,234.56 : x
2. Step 2: Convert to fraction form
   10,979.70/16,434.18 = 7,234.56/x
3. Step 3: Cross multiply
   10,979.70x = 16,434.18 × 7,234.56
4. Step 4: Simplify right side
   10,979.70x = 118,894,061.26
5. Step 5: Solve for x
   x = 118,894,061.26/10,979.70
6. Step 6: Final answer
   x = 10,828.53