Finding the Fourth Proportional to 12,670.64, 17,485.51 and 7,081.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,670.64 : 17,485.51 = 7,081.64 : x
2. Step 2: Convert to fraction form
   12,670.64/17,485.51 = 7,081.64/x
3. Step 3: Cross multiply
   12,670.64x = 17,485.51 × 7,081.64
4. Step 4: Simplify right side
   12,670.64x = 123,826,087.04
5. Step 5: Solve for x
   x = 123,826,087.04/12,670.64
6. Step 6: Final answer
   x = 9,772.68