Finding the Fourth Proportional to 21,818.64, 32,724.72 and 7,025.64

Step by Step Solution

1. Step 1: Write the proportion equation
   21,818.64 : 32,724.72 = 7,025.64 : x
2. Step 2: Convert to fraction form
   21,818.64/32,724.72 = 7,025.64/x
3. Step 3: Cross multiply
   21,818.64x = 32,724.72 × 7,025.64
4. Step 4: Simplify right side
   21,818.64x = 229,912,101.82
5. Step 5: Solve for x
   x = 229,912,101.82/21,818.64
6. Step 6: Final answer
   x = 10,537.42