Finding the Fourth Proportional to 12,674.13, 17,490.29 and 7,085.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,674.13 : 17,490.29 = 7,085.13 : x
2. Step 2: Convert to fraction form
   12,674.13/17,490.29 = 7,085.13/x
3. Step 3: Cross multiply
   12,674.13x = 17,490.29 × 7,085.13
4. Step 4: Simplify right side
   12,674.13x = 123,920,978.39
5. Step 5: Solve for x
   x = 123,920,978.39/12,674.13
6. Step 6: Final answer
   x = 9,777.47