Finding the Fourth Proportional to 9,865.76, 14,790.30 and 4,314.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,865.76 : 14,790.30 = 4,314.89 : x
2. Step 2: Convert to fraction form
   9,865.76/14,790.30 = 4,314.89/x
3. Step 3: Cross multiply
   9,865.76x = 14,790.30 × 4,314.89
4. Step 4: Simplify right side
   9,865.76x = 63,818,443.62
5. Step 5: Solve for x
   x = 63,818,443.62/9,865.76
6. Step 6: Final answer
   x = 6,468.68