Finding the Fourth Proportional to 9,709.98, 14,568.66 and 3,870.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,709.98 : 14,568.66 = 3,870.72 : x
2. Step 2: Convert to fraction form
   9,709.98/14,568.66 = 3,870.72/x
3. Step 3: Cross multiply
   9,709.98x = 14,568.66 × 3,870.72
4. Step 4: Simplify right side
   9,709.98x = 56,391,203.64
5. Step 5: Solve for x
   x = 56,391,203.64/9,709.98
6. Step 6: Final answer
   x = 5,807.55