Finding the Fourth Proportional to 21,793.76, 30,080.76 and 12,368

Step by Step Solution

1. Step 1: Write the proportion equation
   21,793.76 : 30,080.76 = 12,368 : x
2. Step 2: Convert to fraction form
   21,793.76/30,080.76 = 12,368/x
3. Step 3: Cross multiply
   21,793.76x = 30,080.76 × 12,368
4. Step 4: Simplify right side
   21,793.76x = 372,038,839.68
5. Step 5: Solve for x
   x = 372,038,839.68/21,793.76
6. Step 6: Final answer
   x = 17,070.89