Finding the Fourth Proportional to 14,665.23, 21,997.53 and 3,571.98

Step by Step Solution

1. Step 1: Write the proportion equation
   14,665.23 : 21,997.53 = 3,571.98 : x
2. Step 2: Convert to fraction form
   14,665.23/21,997.53 = 3,571.98/x
3. Step 3: Cross multiply
   14,665.23x = 21,997.53 × 3,571.98
4. Step 4: Simplify right side
   14,665.23x = 78,574,737.21
5. Step 5: Solve for x
   x = 78,574,737.21/14,665.23
6. Step 6: Final answer
   x = 5,357.89