Finding the Fourth Proportional to 14,061.12, 21,075.42 and 5,290.44

Step by Step Solution

1. Step 1: Write the proportion equation
   14,061.12 : 21,075.42 = 5,290.44 : x
2. Step 2: Convert to fraction form
   14,061.12/21,075.42 = 5,290.44/x
3. Step 3: Cross multiply
   14,061.12x = 21,075.42 × 5,290.44
4. Step 4: Simplify right side
   14,061.12x = 111,498,244.98
5. Step 5: Solve for x
   x = 111,498,244.98/14,061.12
6. Step 6: Final answer
   x = 7,929.54