Finding the Fourth Proportional to 11,617.05, 17,423.51 and 5,290.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,617.05 : 17,423.51 = 5,290.48 : x
2. Step 2: Convert to fraction form
   11,617.05/17,423.51 = 5,290.48/x
3. Step 3: Cross multiply
   11,617.05x = 17,423.51 × 5,290.48
4. Step 4: Simplify right side
   11,617.05x = 92,178,731.18
5. Step 5: Solve for x
   x = 92,178,731.18/11,617.05
6. Step 6: Final answer
   x = 7,934.78