Finding the Fourth Proportional to 39,453.50, 54,445.83 and 21,548.55

Step by Step Solution

1. Step 1: Write the proportion equation
   39,453.50 : 54,445.83 = 21,548.55 : x
2. Step 2: Convert to fraction form
   39,453.50/54,445.83 = 21,548.55/x
3. Step 3: Cross multiply
   39,453.50x = 54,445.83 × 21,548.55
4. Step 4: Simplify right side
   39,453.50x = 1,173,228,500.06
5. Step 5: Solve for x
   x = 1,173,228,500.06/39,453.50
6. Step 6: Final answer
   x = 29,736.99