Finding the Fourth Proportional to 9,147.40, 12,623.58 and 5,609.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.40 : 12,623.58 = 5,609.32 : x
2. Step 2: Convert to fraction form
   9,147.40/12,623.58 = 5,609.32/x
3. Step 3: Cross multiply
   9,147.40x = 12,623.58 × 5,609.32
4. Step 4: Simplify right side
   9,147.40x = 70,809,699.77
5. Step 5: Solve for x
   x = 70,809,699.77/9,147.40
6. Step 6: Final answer
   x = 7,740.96