Finding the Fourth Proportional to 17,706.40, 24,426.72 and 10,620.64

Step by Step Solution

1. Step 1: Write the proportion equation
   17,706.40 : 24,426.72 = 10,620.64 : x
2. Step 2: Convert to fraction form
   17,706.40/24,426.72 = 10,620.64/x
3. Step 3: Cross multiply
   17,706.40x = 24,426.72 × 10,620.64
4. Step 4: Simplify right side
   17,706.40x = 259,427,399.50
5. Step 5: Solve for x
   x = 259,427,399.50/17,706.40
6. Step 6: Final answer
   x = 14,651.62