Finding the Fourth Proportional to 19,880.82, 27,435.54 and 10,928.25

Step by Step Solution

1. Step 1: Write the proportion equation
   19,880.82 : 27,435.54 = 10,928.25 : x
2. Step 2: Convert to fraction form
   19,880.82/27,435.54 = 10,928.25/x
3. Step 3: Cross multiply
   19,880.82x = 27,435.54 × 10,928.25
4. Step 4: Simplify right side
   19,880.82x = 299,822,440.01
5. Step 5: Solve for x
   x = 299,822,440.01/19,880.82
6. Step 6: Final answer
   x = 15,080.99