Finding the Fourth Proportional to 23,153.10, 31,956.51 and 13,087.37

Step by Step Solution

1. Step 1: Write the proportion equation
   23,153.10 : 31,956.51 = 13,087.37 : x
2. Step 2: Convert to fraction form
   23,153.10/31,956.51 = 13,087.37/x
3. Step 3: Cross multiply
   23,153.10x = 31,956.51 × 13,087.37
4. Step 4: Simplify right side
   23,153.10x = 418,226,510.50
5. Step 5: Solve for x
   x = 418,226,510.50/23,153.10
6. Step 6: Final answer
   x = 18,063.52