Finding the Fourth Proportional to 17,860.47, 24,647.33 and 9,902.70

Step by Step Solution

1. Step 1: Write the proportion equation
   17,860.47 : 24,647.33 = 9,902.70 : x
2. Step 2: Convert to fraction form
   17,860.47/24,647.33 = 9,902.70/x
3. Step 3: Cross multiply
   17,860.47x = 24,647.33 × 9,902.70
4. Step 4: Simplify right side
   17,860.47x = 244,074,991.55
5. Step 5: Solve for x
   x = 244,074,991.55/17,860.47
6. Step 6: Final answer
   x = 13,665.65