Finding the Fourth Proportional to 12,670.39, 17,485.16 and 7,081.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,670.39 : 17,485.16 = 7,081.39 : x
2. Step 2: Convert to fraction form
   12,670.39/17,485.16 = 7,081.39/x
3. Step 3: Cross multiply
   12,670.39x = 17,485.16 × 7,081.39
4. Step 4: Simplify right side
   12,670.39x = 123,819,237.17
5. Step 5: Solve for x
   x = 123,819,237.17/12,670.39
6. Step 6: Final answer
   x = 9,772.33