Finding the Fourth Proportional to 15,436.56, 21,343.86 and 14,727

Step by Step Solution

1. Step 1: Write the proportion equation
   15,436.56 : 21,343.86 = 14,727 : x
2. Step 2: Convert to fraction form
   15,436.56/21,343.86 = 14,727/x
3. Step 3: Cross multiply
   15,436.56x = 21,343.86 × 14,727
4. Step 4: Simplify right side
   15,436.56x = 314,331,026.22
5. Step 5: Solve for x
   x = 314,331,026.22/15,436.56
6. Step 6: Final answer
   x = 20,362.76