Finding the Fourth Proportional to 22,111.82, 30,513.60 and 13,157.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,111.82 : 30,513.60 = 13,157.27 : x
2. Step 2: Convert to fraction form
   22,111.82/30,513.60 = 13,157.27/x
3. Step 3: Cross multiply
   22,111.82x = 30,513.60 × 13,157.27
4. Step 4: Simplify right side
   22,111.82x = 401,475,521.30
5. Step 5: Solve for x
   x = 401,475,521.30/22,111.82
6. Step 6: Final answer
   x = 18,156.61