Finding the Fourth Proportional to 11,711.17, 17,569.56 and 3,391.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,711.17 : 17,569.56 = 3,391.76 : x
2. Step 2: Convert to fraction form
   11,711.17/17,569.56 = 3,391.76/x
3. Step 3: Cross multiply
   11,711.17x = 17,569.56 × 3,391.76
4. Step 4: Simplify right side
   11,711.17x = 59,591,669.56
5. Step 5: Solve for x
   x = 59,591,669.56/11,711.17
6. Step 6: Final answer
   x = 5,088.45