Finding the Fourth Proportional to 33,123.84, 49,708.80 and 21,408

Step by Step Solution

1. Step 1: Write the proportion equation
   33,123.84 : 49,708.80 = 21,408 : x
2. Step 2: Convert to fraction form
   33,123.84/49,708.80 = 21,408/x
3. Step 3: Cross multiply
   33,123.84x = 49,708.80 × 21,408
4. Step 4: Simplify right side
   33,123.84x = 1,064,165,990.40
5. Step 5: Solve for x
   x = 1,064,165,990.40/33,123.84
6. Step 6: Final answer
   x = 32,126.89