Finding the Fourth Proportional to 23,039.64, 31,796.28 and 12,969.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,039.64 : 31,796.28 = 12,969.05 : x
2. Step 2: Convert to fraction form
   23,039.64/31,796.28 = 12,969.05/x
3. Step 3: Cross multiply
   23,039.64x = 31,796.28 × 12,969.05
4. Step 4: Simplify right side
   23,039.64x = 412,367,386.15
5. Step 5: Solve for x
   x = 412,367,386.15/23,039.64
6. Step 6: Final answer
   x = 17,898.17