Finding the Fourth Proportional to 33,172.50, 49,780.62 and 12,396

Step by Step Solution

1. Step 1: Write the proportion equation
   33,172.50 : 49,780.62 = 12,396 : x
2. Step 2: Convert to fraction form
   33,172.50/49,780.62 = 12,396/x
3. Step 3: Cross multiply
   33,172.50x = 49,780.62 × 12,396
4. Step 4: Simplify right side
   33,172.50x = 617,080,565.52
5. Step 5: Solve for x
   x = 617,080,565.52/33,172.50
6. Step 6: Final answer
   x = 18,602.17