Finding the Fourth Proportional to 23,036.56, 31,790.06 and 12,964.98

Step by Step Solution

1. Step 1: Write the proportion equation
   23,036.56 : 31,790.06 = 12,964.98 : x
2. Step 2: Convert to fraction form
   23,036.56/31,790.06 = 12,964.98/x
3. Step 3: Cross multiply
   23,036.56x = 31,790.06 × 12,964.98
4. Step 4: Simplify right side
   23,036.56x = 412,157,492.10
5. Step 5: Solve for x
   x = 412,157,492.10/23,036.56
6. Step 6: Final answer
   x = 17,891.45