Finding the Fourth Proportional to 3,905.61, 5,389.72 and 2,333.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.61 : 5,389.72 = 2,333.71 : x
2. Step 2: Convert to fraction form
   3,905.61/5,389.72 = 2,333.71/x
3. Step 3: Cross multiply
   3,905.61x = 5,389.72 × 2,333.71
4. Step 4: Simplify right side
   3,905.61x = 12,578,043.46
5. Step 5: Solve for x
   x = 12,578,043.46/3,905.61
6. Step 6: Final answer
   x = 3,220.51