Finding the Fourth Proportional to 5,386.10, 8,070.89 and 3,624.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,386.10 : 8,070.89 = 3,624.57 : x
2. Step 2: Convert to fraction form
   5,386.10/8,070.89 = 3,624.57/x
3. Step 3: Cross multiply
   5,386.10x = 8,070.89 × 3,624.57
4. Step 4: Simplify right side
   5,386.10x = 29,253,487.64
5. Step 5: Solve for x
   x = 29,253,487.64/5,386.10
6. Step 6: Final answer
   x = 5,431.30