Finding the Fourth Proportional to 9,725.10, 13,420.72 and 5,533.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,725.10 : 13,420.72 = 5,533.62 : x
2. Step 2: Convert to fraction form
   9,725.10/13,420.72 = 5,533.62/x
3. Step 3: Cross multiply
   9,725.10x = 13,420.72 × 5,533.62
4. Step 4: Simplify right side
   9,725.10x = 74,265,103.39
5. Step 5: Solve for x
   x = 74,265,103.39/9,725.10
6. Step 6: Final answer
   x = 7,636.44