Finding the Fourth Proportional to 12,854.07, 17,737.25 and 7,188.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,854.07 : 17,737.25 = 7,188.23 : x
2. Step 2: Convert to fraction form
   12,854.07/17,737.25 = 7,188.23/x
3. Step 3: Cross multiply
   12,854.07x = 17,737.25 × 7,188.23
4. Step 4: Simplify right side
   12,854.07x = 127,499,440.97
5. Step 5: Solve for x
   x = 127,499,440.97/12,854.07
6. Step 6: Final answer
   x = 9,918.99