Finding the Fourth Proportional to 23,109.98, 31,891.62 and 12,499.58

Step by Step Solution

1. Step 1: Write the proportion equation
   23,109.98 : 31,891.62 = 12,499.58 : x
2. Step 2: Convert to fraction form
   23,109.98/31,891.62 = 12,499.58/x
3. Step 3: Cross multiply
   23,109.98x = 31,891.62 × 12,499.58
4. Step 4: Simplify right side
   23,109.98x = 398,631,855.52
5. Step 5: Solve for x
   x = 398,631,855.52/23,109.98
6. Step 6: Final answer
   x = 17,249.34