Finding the Fourth Proportional to 4,928.06, 7,421.60 and 4,152.89

Step by Step Solution

1. Step 1: Write the proportion equation
   4,928.06 : 7,421.60 = 4,152.89 : x
2. Step 2: Convert to fraction form
   4,928.06/7,421.60 = 4,152.89/x
3. Step 3: Cross multiply
   4,928.06x = 7,421.60 × 4,152.89
4. Step 4: Simplify right side
   4,928.06x = 30,821,030.55
5. Step 5: Solve for x
   x = 30,821,030.55/4,928.06
6. Step 6: Final answer
   x = 6,254.20