Finding the Fourth Proportional to 19,053.72, 28,464.72 and 12,335.49

Step by Step Solution

1. Step 1: Write the proportion equation
   19,053.72 : 28,464.72 = 12,335.49 : x
2. Step 2: Convert to fraction form
   19,053.72/28,464.72 = 12,335.49/x
3. Step 3: Cross multiply
   19,053.72x = 28,464.72 × 12,335.49
4. Step 4: Simplify right side
   19,053.72x = 351,126,268.91
5. Step 5: Solve for x
   x = 351,126,268.91/19,053.72
6. Step 6: Final answer
   x = 18,428.23