Finding the Fourth Proportional to 3,901.22, 5,377.35 and 2,405.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,901.22 : 5,377.35 = 2,405.89 : x
2. Step 2: Convert to fraction form
   3,901.22/5,377.35 = 2,405.89/x
3. Step 3: Cross multiply
   3,901.22x = 5,377.35 × 2,405.89
4. Step 4: Simplify right side
   3,901.22x = 12,937,312.59
5. Step 5: Solve for x
   x = 12,937,312.59/3,901.22
6. Step 6: Final answer
   x = 3,316.22