Finding the Fourth Proportional to 21,558.69, 32,317.03 and 10,311.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,558.69 : 32,317.03 = 10,311.10 : x
2. Step 2: Convert to fraction form
   21,558.69/32,317.03 = 10,311.10/x
3. Step 3: Cross multiply
   21,558.69x = 32,317.03 × 10,311.10
4. Step 4: Simplify right side
   21,558.69x = 333,224,128.03
5. Step 5: Solve for x
   x = 333,224,128.03/21,558.69
6. Step 6: Final answer
   x = 15,456.60