Finding the Fourth Proportional to 12,493.28, 18,739.94 and 3,728.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,493.28 : 18,739.94 = 3,728.00 : x
2. Step 2: Convert to fraction form
   12,493.28/18,739.94 = 3,728.00/x
3. Step 3: Cross multiply
   12,493.28x = 18,739.94 × 3,728.00
4. Step 4: Simplify right side
   12,493.28x = 69,862,383.98
5. Step 5: Solve for x
   x = 69,862,383.98/12,493.28
6. Step 6: Final answer
   x = 5,592.00