Finding the Fourth Proportional to 23,155.85, 31,955.10 and 12,545.48

Step by Step Solution

1. Step 1: Write the proportion equation
   23,155.85 : 31,955.10 = 12,545.48 : x
2. Step 2: Convert to fraction form
   23,155.85/31,955.10 = 12,545.48/x
3. Step 3: Cross multiply
   23,155.85x = 31,955.10 × 12,545.48
4. Step 4: Simplify right side
   23,155.85x = 400,892,067.95
5. Step 5: Solve for x
   x = 400,892,067.95/23,155.85
6. Step 6: Final answer
   x = 17,312.78