Finding the Fourth Proportional to 5,856.76, 8,084.54 and 3,978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   5,856.76 : 8,084.54 = 3,978.08 : x
2. Step 2: Convert to fraction form
   5,856.76/8,084.54 = 3,978.08/x
3. Step 3: Cross multiply
   5,856.76x = 8,084.54 × 3,978.08
4. Step 4: Simplify right side
   5,856.76x = 32,160,946.88
5. Step 5: Solve for x
   x = 32,160,946.88/5,856.76
6. Step 6: Final answer
   x = 5,491.25