Finding the Fourth Proportional to 22,221.16, 30,672.06 and 12,796.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,221.16 : 30,672.06 = 12,796.12 : x
2. Step 2: Convert to fraction form
   22,221.16/30,672.06 = 12,796.12/x
3. Step 3: Cross multiply
   22,221.16x = 30,672.06 × 12,796.12
4. Step 4: Simplify right side
   22,221.16x = 392,483,360.41
5. Step 5: Solve for x
   x = 392,483,360.41/22,221.16
6. Step 6: Final answer
   x = 17,662.60