Finding the Fourth Proportional to 9,702.12, 13,388.04 and 5,452.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,702.12 : 13,388.04 = 5,452.20 : x
2. Step 2: Convert to fraction form
   9,702.12/13,388.04 = 5,452.20/x
3. Step 3: Cross multiply
   9,702.12x = 13,388.04 × 5,452.20
4. Step 4: Simplify right side
   9,702.12x = 72,994,271.69
5. Step 5: Solve for x
   x = 72,994,271.69/9,702.12
6. Step 6: Final answer
   x = 7,523.54