Finding the Fourth Proportional to 5,857.32, 8,086.02 and 3,978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   5,857.32 : 8,086.02 = 3,978.84 : x
2. Step 2: Convert to fraction form
   5,857.32/8,086.02 = 3,978.84/x
3. Step 3: Cross multiply
   5,857.32x = 8,086.02 × 3,978.84
4. Step 4: Simplify right side
   5,857.32x = 32,172,979.82
5. Step 5: Solve for x
   x = 32,172,979.82/5,857.32
6. Step 6: Final answer
   x = 5,492.78