Finding the Fourth Proportional to 17,739, 24,480 and 10,665.54

Step by Step Solution

1. Step 1: Write the proportion equation
   17,739 : 24,480 = 10,665.54 : x
2. Step 2: Convert to fraction form
   17,739/24,480 = 10,665.54/x
3. Step 3: Cross multiply
   17,739x = 24,480 × 10,665.54
4. Step 4: Simplify right side
   17,739x = 261,092,419.20
5. Step 5: Solve for x
   x = 261,092,419.20/17,739
6. Step 6: Final answer
   x = 14,718.55