Finding the Fourth Proportional to 22,200.98, 30,636.84 and 12,129.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,200.98 : 30,636.84 = 12,129.46 : x
2. Step 2: Convert to fraction form
   22,200.98/30,636.84 = 12,129.46/x
3. Step 3: Cross multiply
   22,200.98x = 30,636.84 × 12,129.46
4. Step 4: Simplify right side
   22,200.98x = 371,608,325.31
5. Step 5: Solve for x
   x = 371,608,325.31/22,200.98
6. Step 6: Final answer
   x = 16,738.37