Finding the Fourth Proportional to 33,430.50, 50,148.18 and 12,654

Step by Step Solution

1. Step 1: Write the proportion equation
   33,430.50 : 50,148.18 = 12,654 : x
2. Step 2: Convert to fraction form
   33,430.50/50,148.18 = 12,654/x
3. Step 3: Cross multiply
   33,430.50x = 50,148.18 × 12,654
4. Step 4: Simplify right side
   33,430.50x = 634,575,069.72
5. Step 5: Solve for x
   x = 634,575,069.72/33,430.50
6. Step 6: Final answer
   x = 18,981.92