Finding the Fourth Proportional to 36,496.56, 54,753.05 and 13,123

Step by Step Solution

1. Step 1: Write the proportion equation
   36,496.56 : 54,753.05 = 13,123 : x
2. Step 2: Convert to fraction form
   36,496.56/54,753.05 = 13,123/x
3. Step 3: Cross multiply
   36,496.56x = 54,753.05 × 13,123
4. Step 4: Simplify right side
   36,496.56x = 718,524,275.15
5. Step 5: Solve for x
   x = 718,524,275.15/36,496.56
6. Step 6: Final answer
   x = 19,687.45