Finding the Fourth Proportional to 9,005.52, 13,506.56 and 3,161.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,005.52 : 13,506.56 = 3,161.60 : x
2. Step 2: Convert to fraction form
   9,005.52/13,506.56 = 3,161.60/x
3. Step 3: Cross multiply
   9,005.52x = 13,506.56 × 3,161.60
4. Step 4: Simplify right side
   9,005.52x = 42,702,340.10
5. Step 5: Solve for x
   x = 42,702,340.10/9,005.52
6. Step 6: Final answer
   x = 4,741.80