Finding the Fourth Proportional to 17,736.59, 26,608.77 and 5,257.59

Step by Step Solution

1. Step 1: Write the proportion equation
   17,736.59 : 26,608.77 = 5,257.59 : x
2. Step 2: Convert to fraction form
   17,736.59/26,608.77 = 5,257.59/x
3. Step 3: Cross multiply
   17,736.59x = 26,608.77 × 5,257.59
4. Step 4: Simplify right side
   17,736.59x = 139,898,003.06
5. Step 5: Solve for x
   x = 139,898,003.06/17,736.59
6. Step 6: Final answer
   x = 7,887.54