Finding the Fourth Proportional to 22,591.58, 31,174.79 and 12,519.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,591.58 : 31,174.79 = 12,519.09 : x
2. Step 2: Convert to fraction form
   22,591.58/31,174.79 = 12,519.09/x
3. Step 3: Cross multiply
   22,591.58x = 31,174.79 × 12,519.09
4. Step 4: Simplify right side
   22,591.58x = 390,279,939.15
5. Step 5: Solve for x
   x = 390,279,939.15/22,591.58
6. Step 6: Final answer
   x = 17,275.46