Finding the Fourth Proportional to 22,375.55, 30,879.15 and 12,817.01

Step by Step Solution

1. Step 1: Write the proportion equation
   22,375.55 : 30,879.15 = 12,817.01 : x
2. Step 2: Convert to fraction form
   22,375.55/30,879.15 = 12,817.01/x
3. Step 3: Cross multiply
   22,375.55x = 30,879.15 × 12,817.01
4. Step 4: Simplify right side
   22,375.55x = 395,778,374.34
5. Step 5: Solve for x
   x = 395,778,374.34/22,375.55
6. Step 6: Final answer
   x = 17,687.98