Finding the Fourth Proportional to 8,709.78, 12,019.43 and 4,730.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,709.78 : 12,019.43 = 4,730.89 : x
2. Step 2: Convert to fraction form
   8,709.78/12,019.43 = 4,730.89/x
3. Step 3: Cross multiply
   8,709.78x = 12,019.43 × 4,730.89
4. Step 4: Simplify right side
   8,709.78x = 56,862,652.89
5. Step 5: Solve for x
   x = 56,862,652.89/8,709.78
6. Step 6: Final answer
   x = 6,528.59