Finding the Fourth Proportional to 13,321.50, 18,383.67 and 7,732.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,321.50 : 18,383.67 = 7,732.50 : x
2. Step 2: Convert to fraction form
   13,321.50/18,383.67 = 7,732.50/x
3. Step 3: Cross multiply
   13,321.50x = 18,383.67 × 7,732.50
4. Step 4: Simplify right side
   13,321.50x = 142,151,728.28
5. Step 5: Solve for x
   x = 142,151,728.28/13,321.50
6. Step 6: Final answer
   x = 10,670.85