Finding the Fourth Proportional to 22,748.16, 31,388.76 and 13,186.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,748.16 : 31,388.76 = 13,186.18 : x
2. Step 2: Convert to fraction form
   22,748.16/31,388.76 = 13,186.18/x
3. Step 3: Cross multiply
   22,748.16x = 31,388.76 × 13,186.18
4. Step 4: Simplify right side
   22,748.16x = 413,897,785.59
5. Step 5: Solve for x
   x = 413,897,785.59/22,748.16
6. Step 6: Final answer
   x = 18,194.78