Finding the Fourth Proportional to 22,580.30, 31,164.68 and 13,018.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,580.30 : 31,164.68 = 13,018.46 : x
2. Step 2: Convert to fraction form
   22,580.30/31,164.68 = 13,018.46/x
3. Step 3: Cross multiply
   22,580.30x = 31,164.68 × 13,018.46
4. Step 4: Simplify right side
   22,580.30x = 405,716,016.72
5. Step 5: Solve for x
   x = 405,716,016.72/22,580.30
6. Step 6: Final answer
   x = 17,967.70