Finding the Fourth Proportional to 22,218.82, 30,669.69 and 12,791.14

Step by Step Solution

1. Step 1: Write the proportion equation
   22,218.82 : 30,669.69 = 12,791.14 : x
2. Step 2: Convert to fraction form
   22,218.82/30,669.69 = 12,791.14/x
3. Step 3: Cross multiply
   22,218.82x = 30,669.69 × 12,791.14
4. Step 4: Simplify right side
   22,218.82x = 392,300,298.55
5. Step 5: Solve for x
   x = 392,300,298.55/22,218.82
6. Step 6: Final answer
   x = 17,656.22