Finding the Fourth Proportional to 5,435.19, 7,501.91 and 3,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,435.19 : 7,501.91 = 3,078.72 : x
2. Step 2: Convert to fraction form
   5,435.19/7,501.91 = 3,078.72/x
3. Step 3: Cross multiply
   5,435.19x = 7,501.91 × 3,078.72
4. Step 4: Simplify right side
   5,435.19x = 23,096,264.96
5. Step 5: Solve for x
   x = 23,096,264.96/5,435.19
6. Step 6: Final answer
   x = 4,249.39