Finding the Fourth Proportional to 14,123.89, 21,172.05 and 6,726.37

Step by Step Solution

1. Step 1: Write the proportion equation
   14,123.89 : 21,172.05 = 6,726.37 : x
2. Step 2: Convert to fraction form
   14,123.89/21,172.05 = 6,726.37/x
3. Step 3: Cross multiply
   14,123.89x = 21,172.05 × 6,726.37
4. Step 4: Simplify right side
   14,123.89x = 142,411,041.96
5. Step 5: Solve for x
   x = 142,411,041.96/14,123.89
6. Step 6: Final answer
   x = 10,082.99