Finding the Fourth Proportional to 21,851.69, 32,758.09 and 10,158.53

Step by Step Solution

1. Step 1: Write the proportion equation
   21,851.69 : 32,758.09 = 10,158.53 : x
2. Step 2: Convert to fraction form
   21,851.69/32,758.09 = 10,158.53/x
3. Step 3: Cross multiply
   21,851.69x = 32,758.09 × 10,158.53
4. Step 4: Simplify right side
   21,851.69x = 332,774,040.01
5. Step 5: Solve for x
   x = 332,774,040.01/21,851.69
6. Step 6: Final answer
   x = 15,228.76