Finding the Fourth Proportional to 5,436.09, 7,501.50 and 3,078.18

Step by Step Solution

1. Step 1: Write the proportion equation
   5,436.09 : 7,501.50 = 3,078.18 : x
2. Step 2: Convert to fraction form
   5,436.09/7,501.50 = 3,078.18/x
3. Step 3: Cross multiply
   5,436.09x = 7,501.50 × 3,078.18
4. Step 4: Simplify right side
   5,436.09x = 23,090,967.27
5. Step 5: Solve for x
   x = 23,090,967.27/5,436.09
6. Step 6: Final answer
   x = 4,247.72