Finding the Fourth Proportional to 12,693.84, 17,518.05 and 7,028.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,693.84 : 17,518.05 = 7,028.59 : x
2. Step 2: Convert to fraction form
   12,693.84/17,518.05 = 7,028.59/x
3. Step 3: Cross multiply
   12,693.84x = 17,518.05 × 7,028.59
4. Step 4: Simplify right side
   12,693.84x = 123,127,191.05
5. Step 5: Solve for x
   x = 123,127,191.05/12,693.84
6. Step 6: Final answer
   x = 9,699.76