Finding the Fourth Proportional to 22,188.78, 30,613.14 and 14,638.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,188.78 : 30,613.14 = 14,638.86 : x
2. Step 2: Convert to fraction form
   22,188.78/30,613.14 = 14,638.86/x
3. Step 3: Cross multiply
   22,188.78x = 30,613.14 × 14,638.86
4. Step 4: Simplify right side
   22,188.78x = 448,141,470.62
5. Step 5: Solve for x
   x = 448,141,470.62/22,188.78
6. Step 6: Final answer
   x = 20,196.76