Finding the Fourth Proportional to 5,336.28, 7,364.16 and 2,978.55

Step by Step Solution

1. Step 1: Write the proportion equation
   5,336.28 : 7,364.16 = 2,978.55 : x
2. Step 2: Convert to fraction form
   5,336.28/7,364.16 = 2,978.55/x
3. Step 3: Cross multiply
   5,336.28x = 7,364.16 × 2,978.55
4. Step 4: Simplify right side
   5,336.28x = 21,934,518.77
5. Step 5: Solve for x
   x = 21,934,518.77/5,336.28
6. Step 6: Final answer
   x = 4,110.45