Finding the Fourth Proportional to 9,139.92, 12,613.32 and 5,605.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.92 : 12,613.32 = 5,605.08 : x
2. Step 2: Convert to fraction form
   9,139.92/12,613.32 = 5,605.08/x
3. Step 3: Cross multiply
   9,139.92x = 12,613.32 × 5,605.08
4. Step 4: Simplify right side
   9,139.92x = 70,698,667.67
5. Step 5: Solve for x
   x = 70,698,667.67/9,139.92
6. Step 6: Final answer
   x = 7,735.15