Finding the Fourth Proportional to 12,670.65, 17,485.50 and 7,081.65

Step by Step Solution

1. Step 1: Write the proportion equation
   12,670.65 : 17,485.50 = 7,081.65 : x
2. Step 2: Convert to fraction form
   12,670.65/17,485.50 = 7,081.65/x
3. Step 3: Cross multiply
   12,670.65x = 17,485.50 × 7,081.65
4. Step 4: Simplify right side
   12,670.65x = 123,826,191.08
5. Step 5: Solve for x
   x = 123,826,191.08/12,670.65
6. Step 6: Final answer
   x = 9,772.68