Finding the Fourth Proportional to 14,045.49, 21,071.37 and 5,280.48

Step by Step Solution

1. Step 1: Write the proportion equation
   14,045.49 : 21,071.37 = 5,280.48 : x
2. Step 2: Convert to fraction form
   14,045.49/21,071.37 = 5,280.48/x
3. Step 3: Cross multiply
   14,045.49x = 21,071.37 × 5,280.48
4. Step 4: Simplify right side
   14,045.49x = 111,266,947.86
5. Step 5: Solve for x
   x = 111,266,947.86/14,045.49
6. Step 6: Final answer
   x = 7,921.90