Finding the Fourth Proportional to 16,096.40, 21,807.90 and 16,096.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,096.40 : 21,807.90 = 16,096.40 : x
2. Step 2: Convert to fraction form
   16,096.40/21,807.90 = 16,096.40/x
3. Step 3: Cross multiply
   16,096.40x = 21,807.90 × 16,096.40
4. Step 4: Simplify right side
   16,096.40x = 351,028,681.56
5. Step 5: Solve for x
   x = 351,028,681.56/16,096.40
6. Step 6: Final answer
   x = 21,807.90