Finding the Fourth Proportional to 5,870.64, 8,104.61 and 3,992.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,870.64 : 8,104.61 = 3,992.25 : x
2. Step 2: Convert to fraction form
   5,870.64/8,104.61 = 3,992.25/x
3. Step 3: Cross multiply
   5,870.64x = 8,104.61 × 3,992.25
4. Step 4: Simplify right side
   5,870.64x = 32,355,647.19
5. Step 5: Solve for x
   x = 32,355,647.19/5,870.64
6. Step 6: Final answer
   x = 5,511.43