Finding the Fourth Proportional to 23,155.98, 31,955.31 and 12,545.64

Step by Step Solution

1. Step 1: Write the proportion equation
   23,155.98 : 31,955.31 = 12,545.64 : x
2. Step 2: Convert to fraction form
   23,155.98/31,955.31 = 12,545.64/x
3. Step 3: Cross multiply
   23,155.98x = 31,955.31 × 12,545.64
4. Step 4: Simplify right side
   23,155.98x = 400,899,815.35
5. Step 5: Solve for x
   x = 400,899,815.35/23,155.98
6. Step 6: Final answer
   x = 17,313.01