Finding the Fourth Proportional to 21,834.46, 30,131.39 and 12,403.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,834.46 : 30,131.39 = 12,403.02 : x
2. Step 2: Convert to fraction form
   21,834.46/30,131.39 = 12,403.02/x
3. Step 3: Cross multiply
   21,834.46x = 30,131.39 × 12,403.02
4. Step 4: Simplify right side
   21,834.46x = 373,720,376.80
5. Step 5: Solve for x
   x = 373,720,376.80/21,834.46
6. Step 6: Final answer
   x = 17,116.08