Finding the Fourth Proportional to 19,158.40, 26,436.72 and 10,774.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,158.40 : 26,436.72 = 10,774.72 : x
2. Step 2: Convert to fraction form
   19,158.40/26,436.72 = 10,774.72/x
3. Step 3: Cross multiply
   19,158.40x = 26,436.72 × 10,774.72
4. Step 4: Simplify right side
   19,158.40x = 284,848,255.72
5. Step 5: Solve for x
   x = 284,848,255.72/19,158.40
6. Step 6: Final answer
   x = 14,868.06