Finding the Fourth Proportional to 31,579.54, 43,595.52 and 19,646.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,579.54 : 43,595.52 = 19,646.72 : x
2. Step 2: Convert to fraction form
   31,579.54/43,595.52 = 19,646.72/x
3. Step 3: Cross multiply
   31,579.54x = 43,595.52 × 19,646.72
4. Step 4: Simplify right side
   31,579.54x = 856,508,974.69
5. Step 5: Solve for x
   x = 856,508,974.69/31,579.54
6. Step 6: Final answer
   x = 27,122.28