Finding the Fourth Proportional to 23,072.64, 34,638.72 and 19,806.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,072.64 : 34,638.72 = 19,806.72 : x
2. Step 2: Convert to fraction form
   23,072.64/34,638.72 = 19,806.72/x
3. Step 3: Cross multiply
   23,072.64x = 34,638.72 × 19,806.72
4. Step 4: Simplify right side
   23,072.64x = 686,079,428.20
5. Step 5: Solve for x
   x = 686,079,428.20/23,072.64
6. Step 6: Final answer
   x = 29,735.63