Finding the Fourth Proportional to 8,710.78, 12,020.81 and 4,731.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,710.78 : 12,020.81 = 4,731.89 : x
2. Step 2: Convert to fraction form
   8,710.78/12,020.81 = 4,731.89/x
3. Step 3: Cross multiply
   8,710.78x = 12,020.81 × 4,731.89
4. Step 4: Simplify right side
   8,710.78x = 56,881,150.63
5. Step 5: Solve for x
   x = 56,881,150.63/8,710.78
6. Step 6: Final answer
   x = 6,529.97