Finding the Fourth Proportional to 23,155.64, 31,954.74 and 12,545.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,155.64 : 31,954.74 = 12,545.31 : x
2. Step 2: Convert to fraction form
   23,155.64/31,954.74 = 12,545.31/x
3. Step 3: Cross multiply
   23,155.64x = 31,954.74 × 12,545.31
4. Step 4: Simplify right side
   23,155.64x = 400,882,119.27
5. Step 5: Solve for x
   x = 400,882,119.27/23,155.64
6. Step 6: Final answer
   x = 17,312.51