Finding the Fourth Proportional to 11,658.20, 17,490.71 and 3,760.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,658.20 : 17,490.71 = 3,760.55 : x
2. Step 2: Convert to fraction form
   11,658.20/17,490.71 = 3,760.55/x
3. Step 3: Cross multiply
   11,658.20x = 17,490.71 × 3,760.55
4. Step 4: Simplify right side
   11,658.20x = 65,774,733.22
5. Step 5: Solve for x
   x = 65,774,733.22/11,658.20
6. Step 6: Final answer
   x = 5,641.93