Finding the Fourth Proportional to 21,392.71, 32,075.39 and 10,277.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,392.71 : 32,075.39 = 10,277.28 : x
2. Step 2: Convert to fraction form
   21,392.71/32,075.39 = 10,277.28/x
3. Step 3: Cross multiply
   21,392.71x = 32,075.39 × 10,277.28
4. Step 4: Simplify right side
   21,392.71x = 329,647,789.83
5. Step 5: Solve for x
   x = 329,647,789.83/21,392.71
6. Step 6: Final answer
   x = 15,409.35