Finding the Fourth Proportional to 22,315.69, 30,796.77 and 12,756.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,315.69 : 30,796.77 = 12,756.07 : x
2. Step 2: Convert to fraction form
   22,315.69/30,796.77 = 12,756.07/x
3. Step 3: Cross multiply
   22,315.69x = 30,796.77 × 12,756.07
4. Step 4: Simplify right side
   22,315.69x = 392,845,753.89
5. Step 5: Solve for x
   x = 392,845,753.89/22,315.69
6. Step 6: Final answer
   x = 17,604.02