Finding the Fourth Proportional to 14,322.78, 21,485.33 and 5,442.37

Step by Step Solution

1. Step 1: Write the proportion equation
   14,322.78 : 21,485.33 = 5,442.37 : x
2. Step 2: Convert to fraction form
   14,322.78/21,485.33 = 5,442.37/x
3. Step 3: Cross multiply
   14,322.78x = 21,485.33 × 5,442.37
4. Step 4: Simplify right side
   14,322.78x = 116,931,115.43
5. Step 5: Solve for x
   x = 116,931,115.43/14,322.78
6. Step 6: Final answer
   x = 8,163.99