Finding the Fourth Proportional to 12,017.51, 18,013.49 and 7,089.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,017.51 : 18,013.49 = 7,089.47 : x
2. Step 2: Convert to fraction form
   12,017.51/18,013.49 = 7,089.47/x
3. Step 3: Cross multiply
   12,017.51x = 18,013.49 × 7,089.47
4. Step 4: Simplify right side
   12,017.51x = 127,706,024.61
5. Step 5: Solve for x
   x = 127,706,024.61/12,017.51
6. Step 6: Final answer
   x = 10,626.67