Finding the Fourth Proportional to 9,572.26, 13,209.88 and 5,380.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,572.26 : 13,209.88 = 5,380.52 : x
2. Step 2: Convert to fraction form
   9,572.26/13,209.88 = 5,380.52/x
3. Step 3: Cross multiply
   9,572.26x = 13,209.88 × 5,380.52
4. Step 4: Simplify right side
   9,572.26x = 71,076,023.54
5. Step 5: Solve for x
   x = 71,076,023.54/9,572.26
6. Step 6: Final answer
   x = 7,425.21