Finding the Fourth Proportional to 22,172.50, 30,598.05 and 12,236.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,172.50 : 30,598.05 = 12,236.50 : x
2. Step 2: Convert to fraction form
   22,172.50/30,598.05 = 12,236.50/x
3. Step 3: Cross multiply
   22,172.50x = 30,598.05 × 12,236.50
4. Step 4: Simplify right side
   22,172.50x = 374,413,038.83
5. Step 5: Solve for x
   x = 374,413,038.83/22,172.50
6. Step 6: Final answer
   x = 16,886.37