Finding the Fourth Proportional to 21,962.52, 30,308.70 and 12,404.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,962.52 : 30,308.70 = 12,404.34 : x
2. Step 2: Convert to fraction form
   21,962.52/30,308.70 = 12,404.34/x
3. Step 3: Cross multiply
   21,962.52x = 30,308.70 × 12,404.34
4. Step 4: Simplify right side
   21,962.52x = 375,959,419.76
5. Step 5: Solve for x
   x = 375,959,419.76/21,962.52
6. Step 6: Final answer
   x = 17,118.23