Finding the Fourth Proportional to 22,395.34, 30,904.50 and 12,966.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,395.34 : 30,904.50 = 12,966.94 : x
2. Step 2: Convert to fraction form
   22,395.34/30,904.50 = 12,966.94/x
3. Step 3: Cross multiply
   22,395.34x = 30,904.50 × 12,966.94
4. Step 4: Simplify right side
   22,395.34x = 400,736,797.23
5. Step 5: Solve for x
   x = 400,736,797.23/22,395.34
6. Step 6: Final answer
   x = 17,893.76