Finding the Fourth Proportional to 9,189.24, 12,680.88 and 5,210.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,189.24 : 12,680.88 = 5,210.52 : x
2. Step 2: Convert to fraction form
   9,189.24/12,680.88 = 5,210.52/x
3. Step 3: Cross multiply
   9,189.24x = 12,680.88 × 5,210.52
4. Step 4: Simplify right side
   9,189.24x = 66,073,978.86
5. Step 5: Solve for x
   x = 66,073,978.86/9,189.24
6. Step 6: Final answer
   x = 7,190.36