Finding the Fourth Proportional to 13,399.91, 18,493.01 and 7,433.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,399.91 : 18,493.01 = 7,433.50 : x
2. Step 2: Convert to fraction form
   13,399.91/18,493.01 = 7,433.50/x
3. Step 3: Cross multiply
   13,399.91x = 18,493.01 × 7,433.50
4. Step 4: Simplify right side
   13,399.91x = 137,467,789.84
5. Step 5: Solve for x
   x = 137,467,789.84/13,399.91
6. Step 6: Final answer
   x = 10,258.86