Finding the Fourth Proportional to 5,346.15, 7,978.01 and 4,698.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,346.15 : 7,978.01 = 4,698.28 : x
2. Step 2: Convert to fraction form
   5,346.15/7,978.01 = 4,698.28/x
3. Step 3: Cross multiply
   5,346.15x = 7,978.01 × 4,698.28
4. Step 4: Simplify right side
   5,346.15x = 37,482,924.82
5. Step 5: Solve for x
   x = 37,482,924.82/5,346.15
6. Step 6: Final answer
   x = 7,011.20