Finding the Fourth Proportional to 13,401.37, 18,472.53 and 10,564.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.37 : 18,472.53 = 10,564.12 : x
2. Step 2: Convert to fraction form
   13,401.37/18,472.53 = 10,564.12/x
3. Step 3: Cross multiply
   13,401.37x = 18,472.53 × 10,564.12
4. Step 4: Simplify right side
   13,401.37x = 195,146,023.62
5. Step 5: Solve for x
   x = 195,146,023.62/13,401.37
6. Step 6: Final answer
   x = 14,561.65