Finding the Fourth Proportional to 11,411.61, 17,116.95 and 3,091.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,411.61 : 17,116.95 = 3,091.87 : x
2. Step 2: Convert to fraction form
   11,411.61/17,116.95 = 3,091.87/x
3. Step 3: Cross multiply
   11,411.61x = 17,116.95 × 3,091.87
4. Step 4: Simplify right side
   11,411.61x = 52,923,400.88
5. Step 5: Solve for x
   x = 52,923,400.88/11,411.61
6. Step 6: Final answer
   x = 4,637.68