Finding the Fourth Proportional to 23,156.13, 31,955.25 and 12,545.73

Step by Step Solution

1. Step 1: Write the proportion equation
   23,156.13 : 31,955.25 = 12,545.73 : x
2. Step 2: Convert to fraction form
   23,156.13/31,955.25 = 12,545.73/x
3. Step 3: Cross multiply
   23,156.13x = 31,955.25 × 12,545.73
4. Step 4: Simplify right side
   23,156.13x = 400,901,938.58
5. Step 5: Solve for x
   x = 400,901,938.58/23,156.13
6. Step 6: Final answer
   x = 17,312.99