Finding the Fourth Proportional to 13,796.87, 19,033.35 and 8,128.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,796.87 : 19,033.35 = 8,128.89 : x
2. Step 2: Convert to fraction form
   13,796.87/19,033.35 = 8,128.89/x
3. Step 3: Cross multiply
   13,796.87x = 19,033.35 × 8,128.89
4. Step 4: Simplify right side
   13,796.87x = 154,719,978.00
5. Step 5: Solve for x
   x = 154,719,978.00/13,796.87
6. Step 6: Final answer
   x = 11,214.14