Finding the Fourth Proportional to 12,003.39, 16,564.50 and 7,223.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,003.39 : 16,564.50 = 7,223.31 : x
2. Step 2: Convert to fraction form
   12,003.39/16,564.50 = 7,223.31/x
3. Step 3: Cross multiply
   12,003.39x = 16,564.50 × 7,223.31
4. Step 4: Simplify right side
   12,003.39x = 119,650,518.50
5. Step 5: Solve for x
   x = 119,650,518.50/12,003.39
6. Step 6: Final answer
   x = 9,968.06