Finding the Fourth Proportional to 10,897.96, 16,346.78 and 7,223.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,897.96 : 16,346.78 = 7,223.40 : x
2. Step 2: Convert to fraction form
   10,897.96/16,346.78 = 7,223.40/x
3. Step 3: Cross multiply
   10,897.96x = 16,346.78 × 7,223.40
4. Step 4: Simplify right side
   10,897.96x = 118,079,330.65
5. Step 5: Solve for x
   x = 118,079,330.65/10,897.96
6. Step 6: Final answer
   x = 10,834.99