Finding the Fourth Proportional to 17,685.51, 24,409.46 and 10,136.90

Step by Step Solution

1. Step 1: Write the proportion equation
   17,685.51 : 24,409.46 = 10,136.90 : x
2. Step 2: Convert to fraction form
   17,685.51/24,409.46 = 10,136.90/x
3. Step 3: Cross multiply
   17,685.51x = 24,409.46 × 10,136.90
4. Step 4: Simplify right side
   17,685.51x = 247,436,158.37
5. Step 5: Solve for x
   x = 247,436,158.37/17,685.51
6. Step 6: Final answer
   x = 13,990.90