Finding the Fourth Proportional to 21,833.48, 30,132.48 and 12,402.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,833.48 : 30,132.48 = 12,402.56 : x
2. Step 2: Convert to fraction form
   21,833.48/30,132.48 = 12,402.56/x
3. Step 3: Cross multiply
   21,833.48x = 30,132.48 × 12,402.56
4. Step 4: Simplify right side
   21,833.48x = 373,719,891.15
5. Step 5: Solve for x
   x = 373,719,891.15/21,833.48
6. Step 6: Final answer
   x = 17,116.83