Finding the Fourth Proportional to 9,187.37, 12,680.33 and 5,208.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,187.37 : 12,680.33 = 5,208.50 : x
2. Step 2: Convert to fraction form
   9,187.37/12,680.33 = 5,208.50/x
3. Step 3: Cross multiply
   9,187.37x = 12,680.33 × 5,208.50
4. Step 4: Simplify right side
   9,187.37x = 66,045,435.40
5. Step 5: Solve for x
   x = 66,045,435.40/9,187.37
6. Step 6: Final answer
   x = 7,188.72