Finding the Fourth Proportional to 22,123.50, 30,530.43 and 12,187.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,123.50 : 30,530.43 = 12,187.50 : x
2. Step 2: Convert to fraction form
   22,123.50/30,530.43 = 12,187.50/x
3. Step 3: Cross multiply
   22,123.50x = 30,530.43 × 12,187.50
4. Step 4: Simplify right side
   22,123.50x = 372,089,615.63
5. Step 5: Solve for x
   x = 372,089,615.63/22,123.50
6. Step 6: Final answer
   x = 16,818.75