Finding the Fourth Proportional to 19,867.37, 27,417.15 and 10,915.05

Step by Step Solution

1. Step 1: Write the proportion equation
   19,867.37 : 27,417.15 = 10,915.05 : x
2. Step 2: Convert to fraction form
   19,867.37/27,417.15 = 10,915.05/x
3. Step 3: Cross multiply
   19,867.37x = 27,417.15 × 10,915.05
4. Step 4: Simplify right side
   19,867.37x = 299,259,665.92
5. Step 5: Solve for x
   x = 299,259,665.92/19,867.37
6. Step 6: Final answer
   x = 15,062.88