Finding the Fourth Proportional to 19,912.76, 27,478.56 and 10,958.52

Step by Step Solution

1. Step 1: Write the proportion equation
   19,912.76 : 27,478.56 = 10,958.52 : x
2. Step 2: Convert to fraction form
   19,912.76/27,478.56 = 10,958.52/x
3. Step 3: Cross multiply
   19,912.76x = 27,478.56 × 10,958.52
4. Step 4: Simplify right side
   19,912.76x = 301,124,349.33
5. Step 5: Solve for x
   x = 301,124,349.33/19,912.76
6. Step 6: Final answer
   x = 15,122.18