Finding the Fourth Proportional to 8,620.52, 12,924.18 and 3,937.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,620.52 : 12,924.18 = 3,937.28 : x
2. Step 2: Convert to fraction form
   8,620.52/12,924.18 = 3,937.28/x
3. Step 3: Cross multiply
   8,620.52x = 12,924.18 × 3,937.28
4. Step 4: Simplify right side
   8,620.52x = 50,886,050.81
5. Step 5: Solve for x
   x = 50,886,050.81/8,620.52
6. Step 6: Final answer
   x = 5,902.90