Finding the Fourth Proportional to 3,920.06, 5,901.48 and 3,575.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920.06 : 5,901.48 = 3,575.61 : x
2. Step 2: Convert to fraction form
   3,920.06/5,901.48 = 3,575.61/x
3. Step 3: Cross multiply
   3,920.06x = 5,901.48 × 3,575.61
4. Step 4: Simplify right side
   3,920.06x = 21,101,390.90
5. Step 5: Solve for x
   x = 21,101,390.90/3,920.06
6. Step 6: Final answer
   x = 5,382.93