Finding the Fourth Proportional to 14,456.64, 21,681.72 and 4,069.20

Step by Step Solution

1. Step 1: Write the proportion equation
   14,456.64 : 21,681.72 = 4,069.20 : x
2. Step 2: Convert to fraction form
   14,456.64/21,681.72 = 4,069.20/x
3. Step 3: Cross multiply
   14,456.64x = 21,681.72 × 4,069.20
4. Step 4: Simplify right side
   14,456.64x = 88,227,255.02
5. Step 5: Solve for x
   x = 88,227,255.02/14,456.64
6. Step 6: Final answer
   x = 6,102.89