Finding the Fourth Proportional to 21,883.48, 30,146.52 and 17,405.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,883.48 : 30,146.52 = 17,405.80 : x
2. Step 2: Convert to fraction form
   21,883.48/30,146.52 = 17,405.80/x
3. Step 3: Cross multiply
   21,883.48x = 30,146.52 × 17,405.80
4. Step 4: Simplify right side
   21,883.48x = 524,724,297.82
5. Step 5: Solve for x
   x = 524,724,297.82/21,883.48
6. Step 6: Final answer
   x = 23,978.10