Finding the Fourth Proportional to 12,354.73, 18,533.90 and 3,588.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,354.73 : 18,533.90 = 3,588.50 : x
2. Step 2: Convert to fraction form
   12,354.73/18,533.90 = 3,588.50/x
3. Step 3: Cross multiply
   12,354.73x = 18,533.90 × 3,588.50
4. Step 4: Simplify right side
   12,354.73x = 66,508,928.54
5. Step 5: Solve for x
   x = 66,508,928.54/12,354.73
6. Step 6: Final answer
   x = 5,383.28