Finding the Fourth Proportional to 17,056.47, 23,536.70 and 9,399.40

Step by Step Solution

1. Step 1: Write the proportion equation
   17,056.47 : 23,536.70 = 9,399.40 : x
2. Step 2: Convert to fraction form
   17,056.47/23,536.70 = 9,399.40/x
3. Step 3: Cross multiply
   17,056.47x = 23,536.70 × 9,399.40
4. Step 4: Simplify right side
   17,056.47x = 221,230,857.98
5. Step 5: Solve for x
   x = 221,230,857.98/17,056.47
6. Step 6: Final answer
   x = 12,970.49