Finding the Fourth Proportional to 21,834.06, 30,131.01 and 12,402.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,834.06 : 30,131.01 = 12,402.42 : x
2. Step 2: Convert to fraction form
   21,834.06/30,131.01 = 12,402.42/x
3. Step 3: Cross multiply
   21,834.06x = 30,131.01 × 12,402.42
4. Step 4: Simplify right side
   21,834.06x = 373,697,441.04
5. Step 5: Solve for x
   x = 373,697,441.04/21,834.06
6. Step 6: Final answer
   x = 17,115.34