Finding the Fourth Proportional to 5,345.15, 7,976.52 and 4,697.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,345.15 : 7,976.52 = 4,697.28 : x
2. Step 2: Convert to fraction form
   5,345.15/7,976.52 = 4,697.28/x
3. Step 3: Cross multiply
   5,345.15x = 7,976.52 × 4,697.28
4. Step 4: Simplify right side
   5,345.15x = 37,467,947.87
5. Step 5: Solve for x
   x = 37,467,947.87/5,345.15
6. Step 6: Final answer
   x = 7,009.72