Finding the Fourth Proportional to 17,978.05, 24,812.88 and 11,269.43

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.05 : 24,812.88 = 11,269.43 : x
2. Step 2: Convert to fraction form
   17,978.05/24,812.88 = 11,269.43/x
3. Step 3: Cross multiply
   17,978.05x = 24,812.88 × 11,269.43
4. Step 4: Simplify right side
   17,978.05x = 279,627,004.37
5. Step 5: Solve for x
   x = 279,627,004.37/17,978.05
6. Step 6: Final answer
   x = 15,553.80