Finding the Fourth Proportional to 5,099.52, 7,027.84 and 3,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,099.52 : 7,027.84 = 3,978.72 : x
2. Step 2: Convert to fraction form
   5,099.52/7,027.84 = 3,978.72/x
3. Step 3: Cross multiply
   5,099.52x = 7,027.84 × 3,978.72
4. Step 4: Simplify right side
   5,099.52x = 27,961,807.56
5. Step 5: Solve for x
   x = 27,961,807.56/5,099.52
6. Step 6: Final answer
   x = 5,483.22