Finding the Fourth Proportional to 14,414.48, 21,608.72 and 5,178.32

Step by Step Solution

1. Step 1: Write the proportion equation
   14,414.48 : 21,608.72 = 5,178.32 : x
2. Step 2: Convert to fraction form
   14,414.48/21,608.72 = 5,178.32/x
3. Step 3: Cross multiply
   14,414.48x = 21,608.72 × 5,178.32
4. Step 4: Simplify right side
   14,414.48x = 111,896,866.95
5. Step 5: Solve for x
   x = 111,896,866.95/14,414.48
6. Step 6: Final answer
   x = 7,762.81