Finding the Fourth Proportional to 3,903.10, 5,382.25 and 3,345.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,903.10 : 5,382.25 = 3,345.42 : x
2. Step 2: Convert to fraction form
   3,903.10/5,382.25 = 3,345.42/x
3. Step 3: Cross multiply
   3,903.10x = 5,382.25 × 3,345.42
4. Step 4: Simplify right side
   3,903.10x = 18,005,886.80
5. Step 5: Solve for x
   x = 18,005,886.80/3,903.10
6. Step 6: Final answer
   x = 4,613.23