Finding the Fourth Proportional to 14,106.69, 21,114.27 and 10,407.42

Step by Step Solution

1. Step 1: Write the proportion equation
   14,106.69 : 21,114.27 = 10,407.42 : x
2. Step 2: Convert to fraction form
   14,106.69/21,114.27 = 10,407.42/x
3. Step 3: Cross multiply
   14,106.69x = 21,114.27 × 10,407.42
4. Step 4: Simplify right side
   14,106.69x = 219,745,075.88
5. Step 5: Solve for x
   x = 219,745,075.88/14,106.69
6. Step 6: Final answer
   x = 15,577.37