Finding the Fourth Proportional to 7,788.16, 10,747.92 and 4,251.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,788.16 : 10,747.92 = 4,251.72 : x
2. Step 2: Convert to fraction form
   7,788.16/10,747.92 = 4,251.72/x
3. Step 3: Cross multiply
   7,788.16x = 10,747.92 × 4,251.72
4. Step 4: Simplify right side
   7,788.16x = 45,697,146.42
5. Step 5: Solve for x
   x = 45,697,146.42/7,788.16
6. Step 6: Final answer
   x = 5,867.52