Finding the Fourth Proportional to 14,048.82, 21,057.03 and 5,278.14

Step by Step Solution

1. Step 1: Write the proportion equation
   14,048.82 : 21,057.03 = 5,278.14 : x
2. Step 2: Convert to fraction form
   14,048.82/21,057.03 = 5,278.14/x
3. Step 3: Cross multiply
   14,048.82x = 21,057.03 × 5,278.14
4. Step 4: Simplify right side
   14,048.82x = 111,141,952.32
5. Step 5: Solve for x
   x = 111,141,952.32/14,048.82
6. Step 6: Final answer
   x = 7,911.12