Finding the Fourth Proportional to 5,905.50, 8,152.96 and 3,918.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,905.50 : 8,152.96 = 3,918.78 : x
2. Step 2: Convert to fraction form
   5,905.50/8,152.96 = 3,918.78/x
3. Step 3: Cross multiply
   5,905.50x = 8,152.96 × 3,918.78
4. Step 4: Simplify right side
   5,905.50x = 31,949,656.59
5. Step 5: Solve for x
   x = 31,949,656.59/5,905.50
6. Step 6: Final answer
   x = 5,410.15