Finding the Fourth Proportional to 14,724.72, 21,947.40 and 13,601.16

Step by Step Solution

1. Step 1: Write the proportion equation
   14,724.72 : 21,947.40 = 13,601.16 : x
2. Step 2: Convert to fraction form
   14,724.72/21,947.40 = 13,601.16/x
3. Step 3: Cross multiply
   14,724.72x = 21,947.40 × 13,601.16
4. Step 4: Simplify right side
   14,724.72x = 298,510,098.98
5. Step 5: Solve for x
   x = 298,510,098.98/14,724.72
6. Step 6: Final answer
   x = 20,272.72