Finding the Fourth Proportional to 11,075.91, 15,283.40 and 9,404.07

Step by Step Solution

1. Step 1: Write the proportion equation
   11,075.91 : 15,283.40 = 9,404.07 : x
2. Step 2: Convert to fraction form
   11,075.91/15,283.40 = 9,404.07/x
3. Step 3: Cross multiply
   11,075.91x = 15,283.40 × 9,404.07
4. Step 4: Simplify right side
   11,075.91x = 143,726,116.42
5. Step 5: Solve for x
   x = 143,726,116.42/11,075.91
6. Step 6: Final answer
   x = 12,976.46