Finding the Fourth Proportional to 12,510.23, 17,345.69 and 11,918.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,510.23 : 17,345.69 = 11,918.39 : x
2. Step 2: Convert to fraction form
   12,510.23/17,345.69 = 11,918.39/x
3. Step 3: Cross multiply
   12,510.23x = 17,345.69 × 11,918.39
4. Step 4: Simplify right side
   12,510.23x = 206,732,596.61
5. Step 5: Solve for x
   x = 206,732,596.61/12,510.23
6. Step 6: Final answer
   x = 16,525.09