Finding the Fourth Proportional to 18,061.45, 24,931.49 and 13,598.15

Step by Step Solution

1. Step 1: Write the proportion equation
   18,061.45 : 24,931.49 = 13,598.15 : x
2. Step 2: Convert to fraction form
   18,061.45/24,931.49 = 13,598.15/x
3. Step 3: Cross multiply
   18,061.45x = 24,931.49 × 13,598.15
4. Step 4: Simplify right side
   18,061.45x = 339,021,948.10
5. Step 5: Solve for x
   x = 339,021,948.10/18,061.45
6. Step 6: Final answer
   x = 18,770.47