Finding the Fourth Proportional to 17,739.36, 26,608.89 and 5,259.42

Step by Step Solution

1. Step 1: Write the proportion equation
   17,739.36 : 26,608.89 = 5,259.42 : x
2. Step 2: Convert to fraction form
   17,739.36/26,608.89 = 5,259.42/x
3. Step 3: Cross multiply
   17,739.36x = 26,608.89 × 5,259.42
4. Step 4: Simplify right side
   17,739.36x = 139,947,328.24
5. Step 5: Solve for x
   x = 139,947,328.24/17,739.36
6. Step 6: Final answer
   x = 7,889.09