Finding the Fourth Proportional to 21,796.86, 30,080.25 and 12,366.84

Step by Step Solution

1. Step 1: Write the proportion equation
   21,796.86 : 30,080.25 = 12,366.84 : x
2. Step 2: Convert to fraction form
   21,796.86/30,080.25 = 12,366.84/x
3. Step 3: Cross multiply
   21,796.86x = 30,080.25 × 12,366.84
4. Step 4: Simplify right side
   21,796.86x = 371,997,638.91
5. Step 5: Solve for x
   x = 371,997,638.91/21,796.86
6. Step 6: Final answer
   x = 17,066.57