Finding the Fourth Proportional to 33,679.18, 50,503.18 and 12,603.59

Step by Step Solution

1. Step 1: Write the proportion equation
   33,679.18 : 50,503.18 = 12,603.59 : x
2. Step 2: Convert to fraction form
   33,679.18/50,503.18 = 12,603.59/x
3. Step 3: Cross multiply
   33,679.18x = 50,503.18 × 12,603.59
4. Step 4: Simplify right side
   33,679.18x = 636,521,374.42
5. Step 5: Solve for x
   x = 636,521,374.42/33,679.18
6. Step 6: Final answer
   x = 18,899.55