Finding the Fourth Proportional to 11,265.72, 16,902.18 and 5,419.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,265.72 : 16,902.18 = 5,419.14 : x
2. Step 2: Convert to fraction form
   11,265.72/16,902.18 = 5,419.14/x
3. Step 3: Cross multiply
   11,265.72x = 16,902.18 × 5,419.14
4. Step 4: Simplify right side
   11,265.72x = 91,595,279.73
5. Step 5: Solve for x
   x = 91,595,279.73/11,265.72
6. Step 6: Final answer
   x = 8,130.44