Finding the Fourth Proportional to 17,685.76, 24,409.81 and 10,137.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,685.76 : 24,409.81 = 10,137.15 : x
2. Step 2: Convert to fraction form
   17,685.76/24,409.81 = 10,137.15/x
3. Step 3: Cross multiply
   17,685.76x = 24,409.81 × 10,137.15
4. Step 4: Simplify right side
   17,685.76x = 247,445,783.39
5. Step 5: Solve for x
   x = 247,445,783.39/17,685.76
6. Step 6: Final answer
   x = 13,991.25