Finding the Fourth Proportional to 22,548.72, 31,114.20 and 13,110

Step by Step Solution

1. Step 1: Write the proportion equation
   22,548.72 : 31,114.20 = 13,110 : x
2. Step 2: Convert to fraction form
   22,548.72/31,114.20 = 13,110/x
3. Step 3: Cross multiply
   22,548.72x = 31,114.20 × 13,110
4. Step 4: Simplify right side
   22,548.72x = 407,907,162
5. Step 5: Solve for x
   x = 407,907,162/22,548.72
6. Step 6: Final answer
   x = 18,090.04