Finding the Fourth Proportional to 17,678.48, 26,515.89 and 5,991.39

Step by Step Solution

1. Step 1: Write the proportion equation
   17,678.48 : 26,515.89 = 5,991.39 : x
2. Step 2: Convert to fraction form
   17,678.48/26,515.89 = 5,991.39/x
3. Step 3: Cross multiply
   17,678.48x = 26,515.89 × 5,991.39
4. Step 4: Simplify right side
   17,678.48x = 158,867,038.19
5. Step 5: Solve for x
   x = 158,867,038.19/17,678.48
6. Step 6: Final answer
   x = 8,986.47