Finding the Fourth Proportional to 22,964.76, 31,691.36 and 13,028.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,964.76 : 31,691.36 = 13,028.76 : x
2. Step 2: Convert to fraction form
   22,964.76/31,691.36 = 13,028.76/x
3. Step 3: Cross multiply
   22,964.76x = 31,691.36 × 13,028.76
4. Step 4: Simplify right side
   22,964.76x = 412,899,123.51
5. Step 5: Solve for x
   x = 412,899,123.51/22,964.76
6. Step 6: Final answer
   x = 17,979.68