Finding the Fourth Proportional to 13,463.48, 18,574.59 and 13,442.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,463.48 : 18,574.59 = 13,442.69 : x
2. Step 2: Convert to fraction form
   13,463.48/18,574.59 = 13,442.69/x
3. Step 3: Cross multiply
   13,463.48x = 18,574.59 × 13,442.69
4. Step 4: Simplify right side
   13,463.48x = 249,692,552.09
5. Step 5: Solve for x
   x = 249,692,552.09/13,463.48
6. Step 6: Final answer
   x = 18,545.91